25 Best Lead Generation Companies and Services in 2025

In 2025, having a dialed-in B2B lead generation system is the difference between keeping your pipeline predictable, or watching it dry up.

Across industries, the best-performing companies are using modern lead generation to:

• Automate outbound across LinkedIn, email, and multichannel flows.
• Identify and target ready-to-buy accounts with intent signals.
• Enrich and verify data for higher deliverability and call-connect rates.
• Book meetings predictably without scaling internal SDR headcount.
• Convert anonymous website traffic into pipeline opportunities.

All while freeing their team to focus on conversations, deals, and revenue. Not digging through messy spreadsheets or manually cleaning up data.

But with so many B2B lead generation companies, agencies, and online solutions out there on the market, choosing the right one can get overwhelming fast.

And here’s the thing: There is no single “best” lead generation solution.

So, for this guide, I personally reviewed 25 different B2B lead generation tools, agencies, and marketing platforms. Everything from data providers, SDR agencies, and cold outreach platforms to inbound growth partners and website intent tools. 

I combined product research, real user reviews, and industry benchmarks in outbound systems.

Each option is built for different businesses, ICPs, channels, and outcomes. Some tools are perfect for DIY outbound teams. While others are best if you want meetings booked for you, without hiring SDRs. And some specialize in inbound lead generation.

Below, I’ll be covering the top 25 B2B lead generation companies of 2025. I’ll break down what they offer, who they’re best for, how much they cost, and how to choose the right one for your team.

• What is B2B lead generation and how does it work? (how companies generate leads, benefits, what to look for).
• 5 Main types of lead generation companies.
• 25 Best lead generation companies and services in 2025.

Key Takeaways

DIY outbound & automation 

• Expandi – LinkedIn + email outreach at scale (great for agencies & founders).
• Apollo.io – All-in-one data + sequences + basic enrichment.
• Snov.io – Budget-friendly cold email + data + warm-up.

B2B data & sales intelligence

Cognism, ZoomInfo, Kaspr, Lusha, UpLead, RocketReach – Best if you already have SDRs and just need accurate contact data and intent.

Outsourced SDR & appointment setting

Belkins, CIENCE, Martal Group, Leadium, SalesRoads, Callbox, Pearl Lemon Leads – Ideal if you want meetings booked for you without hiring in-house.

Inbound & demand generation agencies

LeadGeneration.com, Gripped – Build long-term inbound engines via SEO, content, and PPC.

Website visitor & intent tools

Salespanel, Dealfront (Leadfeeder) – Turn anonymous visitors into actionable accounts for fast, intent-driven outreach.

Other lead generation solutions

• Cleverly – LinkedIn-focused outbound agency offering DFY outreach, list building, and LinkedIn Ads management.
• LeadGenius – AI + human-researched, highly customized data enrichment for niche ICPs and complex segments.
• Salesloft – Sales engagement platform for managing outbound cadences, calls, and multi-touch sequences across teams.
• Seamless – AI-powered contact data engine delivering real-time emails and phone numbers via Chrome extension.
• Clay – Advanced enrichment, automation, and AI personalization tool used for building highly targeted outbound workflows.

What Is B2B Lead Generation and How Does It Work?

At its core, B2B lead generation is the process of identifying, attracting, and qualifying potential business customers who match your Ideal Customer Profile (ICP). It focuses on sourcing people with budget, authority, and buying intent and moving them into your sales pipeline.

Modern B2B lead generation companies combine data, multi-channel outreach, sales automation, and intent signals to consistently supply teams with prospects who are more likely to convert.

From there, it’s usually up to you to close them and convert them into paying clients.

What are lead generation companies?

Most lead generation companies and agencies typically fall into two categories:

1. Lead Generation Software (Data & Automation Tools)

These platforms provide:

• Verified B2B contact data (emails, phones, firmographics).
• Data enrichment.
• Sales engagement tools (email sequences, call workflows).
• Website visitor identification.
• Intent data.
• Integrations with CRMs and outreach platforms.

They’re ideal for in-house sales teams that want control, automation, and scale.

Expandi is an example of lead generation software. As it helps you fully automate:

• Scraping leads and their contact info.
• Setting up smart campaigns and outreach flows.
• Sending outreach messages, follow-ups, and more.

2. Lead Generation Agencies (Service Providers)

These firms act as an outsourced extension of your sales team. They typically offer:

• SDR teams
• Appointment setting
• Multi-channel outbound campaigns
• Cold email + LinkedIn outreach
• Lead research
• Target account list building
• Lead nurturing

They’re ideal for companies lacking internal SDRs, or those wanting to scale pipeline immediately without hiring new employees.

Which one you’ll need will depend on your company, size, operations, budget, and more. We’ll get into that later.

How do B2B lead generation companies generate leads?

B2B lead generation companies use a mix of outbound, inbound, data-driven, and AI-powered methods. Here’s a practical breakdown:

1. Outbound Lead Generation

• Cold email or LinkedIn outreach
• Calling and call follow-ups
• LinkedIn outreach sequences
• Multi-touch SDR cadences

2. Inbound Lead Generation

• Content marketing
• SEO (ranking for keywords with buying intent)
• PPC campaigns (search ads, retargeting, display)
• Social media campaigns
• Landing pages + conversion optimization

3. Buyer Intent & Sales Signals

Many companies use real-time intent data to identify accounts currently researching a solution:

• Technographic changes
• Hiring signals
• Funding rounds
• Website visits
• Research activity across B2B intent networks

4. Data Acquisition & Enrichment

Tools pull, verify, and enrich contact data from:

• Public sources
• Partners
• Corporate websites
• LinkedIn
• First-party engagement data
• Proprietary verification (e.g., phone-verified mobile numbers)

5. ABM (Account-Based Marketing)

For enterprise deals, lead gen companies use ABM tactics:

• Targeting high-value accounts
• Personalized outreach
• Multi-stakeholder engagement
• Multi-channel sequencing across email, ads, and social

Each of these tactics is for different people, objectives, and budgets.

Wondering how much should you pay for lead generation?

For a more detailed breakdown of the prices involved, check out our guide on how much does lead generation cost.

Benefits of lead generation services

The main benefit of working with lead generation companies is that they do the work for sourcing for you. All you have to do is focus on closing those leads. Typically, main benefits include:

• Higher lead quality – Lead gen companies filter by ICP, intent, firmographics, and behavioral data, improving prospect-fit.
• Faster pipeline growth – Outsourced SDRs and automated systems generate leads while your team focuses on closing.
• Lower acquisition costs – According to HubSpot, inbound leads cost 61% less than outbound leads when executed correctly.
• Better forecasting – Predictable lead supply stabilizes sales cycles.
• Access to verified data – Accurate data increases email deliverability and call connect rates.
• Scalability – You can scale up lead volume without hiring internal SDR headcount.

Types of B2B Lead Generation Companies

Now, before we get to the list, below is a quick breakdown of the main company types and their pros/cons.

Type	What They Do	Best For	Pros	Cons
Data providers	Provide accurate B2B contact data, intent, enrichment	Teams with in-house SDRs	Scalable, automated, high-quality data	Requires team to run outreach
Outsourced SDR agencies	Run outbound DFY + book meetings	Teams without internal SDRs	Fast pipeline growth, no hiring required	Higher cost, less control
Marketing-driven agencies	SEO, PPC, content, inbound campaigns	Companies wanting long-term inbound engine	Inbound leads convert at higher rates, often higher quality leads	Slower ROI, requires ongoing investment
Sales engagement platforms	Automate cadences, email, calling	SDR teams needing better efficiency	Drives consistency, improves productivity	Doesn’t provide leads, just the infrastructure
Visitor identification tools	Reveal anonymous web visitors	High-traffic websites	Faster intent-based outreach	Traffic needed to see impact

Top 25 Best B2B Lead Generation Companies & Services in 2025

Before we dive in: keep in mind, there is no single “best” B2B lead generation company.

The right choice depends on your ICP, channels, budget, and whether you need data, done-for-you outreach, or full-funnel support.

The list below is not ranked in order. Each company excels at something different.

That said, here are some of the best B2B lead generation companies in 2025:

• Expandi.
• Cognism.
• Kaspr.
• ZoomInfo.
• CIENCE.
• Salespanel.
• Belkins.
• LeadGeneration.
• Martal Group.
• Cleverly.
• Apollo.
• LeadGenius.
• Salesloft.
• RocketReach.
• UpLead.
• Lusha.
• Snov.
• Leadium.
• Pearl Lemon Leads.
• Callbox.
• Leadfeeder by Dealfront.
• Gripped.
• Seamless.
• Clay.

1. Expandi

Expandi (yes, that’s us) is an automated outreach platform that helps B2B teams generate leads through LinkedIn, email, and smart sequencing. 

It automates profile scraping, contact enrichment, personalized outreach, and follow-up flows. Allowing users to run campaigns at scale without violating LinkedIn limits. 

Category:

LinkedIn + email outreach automation software.

Key features:

• Smart Campaigns for LinkedIn + email multichannel sequencing all in one place.
• Automated profile scraping and contact collection.
• AI-driven message personalization and dynamic variables.
• Safety features to protect accounts and mimic human behavior.
• Webhooks, native integrations, and Zapier connectivity.
• Inbox management + unified reply handling.

Best for:

Expandi is ideal for agencies, SDR teams, and founders who want fully automated, high-volume outbound.

Pricing:

• $99/mo.

What users say:

“I love that I can rest easy at the end of the day and know that I have Expandi to be working on my behalf – Love Automation. I have increased my following and connections by the hundreds in a short period of time and because I have campaigns working for me in the background, our business is becoming more top of mind to new prospects and leads. Set up is easy and working with their technical team is easy.” – verified small business owner review.

2. Cognism

Cognism is one of the strongest sales intelligence platforms for high-quality, phone-verified mobile numbers.

It offers GDPR/CCPA-compliant data with deep coverage across EMEA, NAM, and APAC. Cognism is ideal for sales teams that rely heavily on outbound dialing, intent data, and SDR automation.

Category: 

B2B data provider & sales intelligence software.

Key features:

• Phone-verified mobile numbers.
• Buyer intent signals.
• Global do-not-call list scrubbing.
• Browser extension for LinkedIn + corporate sites.
• CRM integrations: HubSpot, Salesforce, Outreach.

Best for: 

Teams that need verified mobile numbers, compliant data, and global coverage.

Pricing:

• Custom. Pricing varies by team size, regions, and add-ons.

What users say

“This platform is very easy to use and highly intuitive. I can conduct detailed research within minutes, and it conveniently generates data lists in CSV format. I also appreciate its integration with the CRM, specifically Salesforce… I believe there needs to be greater clarity and more tools regarding data usage. Although they state that they are GDPR compliant, they do not offer any clear, GDPR-friendly methods for reaching customers…” – verified enterprise marketing manager review.

3. Kaspr

Kaspr is a lightweight, fast, and affordable prospecting tool that helps SDRs and recruiters pull verified emails and phone numbers directly from LinkedIn and Sales Navigator. 

Its Chrome extension enriches profiles in real time, while the dashboard helps organize workflows, export leads, and sync data into your CRM.

Category:

B2B contact data tool & LinkedIn prospecting platform.

Key features:

• Real-time contact enrichment from 120+ verified sources.
• LinkedIn + Sales Navigator Chrome Extension.
• Direct dial phone numbers for faster outbound.
• Lead management dashboard with automated workflows.
• Integrations with HubSpot, Pipedrive, Salesforce, and Zapier.
• API access for bulk enrichment.

Best for:

SMBs, SDRs, and recruiters who prospect directly on LinkedIn.

Pricing:

• Free – with limited credits.
• Starter – $68/per user/mo. 
• Business – $115/per user/mo.
• Enterprise – Custom.

What users say:

“What I like best about Kaspr is its ability to quickly and accurately find contact details for prospects. The platform’s ease of use and seamless integration with tools like LinkedIn and CRM systems make it incredibly efficient for lead generation… What I dislike about Kaspr is that sometimes the contact information retrieved can be outdated or incomplete.” – verified sales development representative review.

4. ZoomInfo

ZoomInfo is a large, data-rich B2B intelligence platform used by sales, marketing, and recruiting teams. 

It offers broad contact coverage, deep firmographic and technographic data, and strong US market coverage. 

Teams use it to identify decision-makers, track buying intent, and sync data directly into CRMs.

Category:

B2B data provider & go-to-market intelligence platform

Key features:

• Advanced filtering across contacts, companies, and intent signals.
• Buyer intent alerts and behavioral data.
• Website visitor tracking via ZoomInfo WebSights.
• Chrome Extension for LinkedIn and corporate sites.
• CRM integrations with Salesforce, HubSpot, Outreach, and more.

Best for:

Mid-market and enterprise teams needing a broad US-focused B2B database.

Pricing:

• Have to contact sales. Varies by seats, credit volume, and feature modules.
• Online research says between $15,000 to $40,000 per year.

What users say:

“The best thing about ZoomInfo Sales is how easy it makes it to find the right companies and contacts. The filters are solid, the data is organized well, and it helps speed up the early part of prospecting… The platform can feel a bit overwhelming at times. There are tons of features, tabs, and options, and it takes a while to figure out what you actually need versus what just gets in the way” – verified account executive review.

5. CIENCE

CIENCE is a hybrid provider offering both lead generation software and fully outsourced SDR services. 

Companies use CIENCE when they need booked meetings, ABM support, or done-for-you outbound execution. Their proprietary platform helps manage campaigns, SDR activity, and performance analytics.

Category:

SDR agency + outbound sales platform

Key features:

• Multichannel outbound campaigns (email, phone, LinkedIn).
• Managed SDR teams and appointment setting.
• Account-based marketing programs.
• Lead research, ICP development, and qualification.
• Reporting dashboard with performance insights.

Best for:

Companies looking for done-for-you SDR execution without hiring internally.

Pricing:

• One-time: $5,000 One-time setup fee
• Monthly: $250 per Held Meeting

What users say:

“The sales playbook Cience created was successful. They’ve had consistently impressive cold emailing open rates, and their targeted LinkedIn advertising has worked well… Unfortunately, the price of Cience is not sustainable for our small business in the long term. At first there were a few communication hiccups and the program took a while to gain steam – but the core member of our team lasted through lots of turn over around her while keeping our account on track” – verified user in consumer goods review.

6. Salespanel

Salespanel helps B2B teams identify, track, and qualify website visitors. It connects visitor behavior to CRM records, enriches profiles, and scores leads based on intent and engagement. 

Marketing teams use it to personalize journeys and increase conversion rates from existing website traffic.

Targeting people who already visited your site is a strong outreach signal you can use, since they’ve already demonstrated potential buying interest without converting yet.

Category:

Website visitor identification & lead qualification software

Key features:

• Real-time visitor tracking and analytics.
• Behavioral and firmographic lead scoring.
• Automated triggers and journey mapping.
• CRM integrations (HubSpot, Pipedrive, Salesforce).
• Website personalization based on visitor behavior.

Best for:

Marketing teams needing deeper insight into who visits their site and how engaged they are.

Pricing:

• Salespanel Customer Data Platform – $99/mo. Up to 10% traffic deanonymized, 10,000 visitors/mo included. And then $10/mo per 1,000 visitors.
• Salespanel Account Reveal – $99/mo. Up to 60% traffic deanonymized, 2,000 visitors/mo included. And then $40/mo per 1,000 visitors.
• Salespanel Agents  – $499/mo.

What users say:

“As an agency implementing Salespanel for a client, one of the most valuable features is the ability to generate reports of leads, customers, and overall marketing performance in just a few clicks. These reports help us identify weak and strong points to optimise campaigns and share with clients… Salespanel’s pricing is based on the number of leads tracked, which can become expensive for companies with large volumes of traffic and leads.” – verified head of growth and marketing user review.

7. Belkins

Belkins is a well-known B2B lead generation agency, specializing in appointment setting, outbound execution, omnichannel engagement, and SDR-as-a-service. 

They’re known for creating tailored go-to-market strategies, high lead quality, and offering a wide portfolio of outbound + inbound services.

Belkins is for companies that want a done-for-you pipeline generation engine without hiring internal SDRs.

Category:

B2B lead generation agency & outsourced SDR service.

Key features:

• Omnichannel appointment setting (email, LinkedIn, phone, SMS, etc).
• Dedicated SDR, researcher, copywriter, and account manager.
• Lead research + hand-picked prospect lists.
• ABM programs and tailored ICP development.
• Deliverability consulting + HubSpot CRM consulting.

Best for:

Companies wanting consistent, high-quality appointments and a fully managed outbound engine.

Pricing:

• Custom. 
• Depends on ICP complexity, volume, channels, and SDR involvement.

What users say:

“Belkins carefully studied each segment we targeted and crafted messages that matched our tone and their best practices. They delivered a comprehensive market segment analysis, customized outreach messages, and steady campaign management. In the first month, we closed our first contract, which was a promising start. Throughout, they provided regular updates and adjusted the strategy as needed.” – verified CCO review.

P.S. See how Belkins is generating leads on autopilot with Expandi here.

8. LeadGeneration.com

LeadGeneration is a full-service B2B marketing and lead generation agency specializing in multi-channel campaigns, ICP development, and both inbound and outbound acquisition. 

Companies use this agency when they need custom-built campaigns across SEO, paid media, content, landing pages, and appointment setting, all managed by a dedicated project lead.

Category:

Full-service B2B lead generation & digital marketing agency.

Key features:

• Custom-built inbound + outbound lead generation campaigns.
• Dedicated project manager and ongoing optimization.
• SEO, PPC, landing page creation, and funnel development.
• Appointment setting + lead nurturing programs.
• CRM integrations (HubSpot, Salesforce, Pipedrive).

Best for:

Companies wanting multi-channel B2B lead generation managed by a dedicated team.

Pricing:

• Custom. Free consultation required.

What users say:

“WebiMax has enhanced Broadley’s online presence tremendously to ensure that our brand is visible to the consumers who need us most. WebiMax has taken over the management of Broadley’s SEO, PPC, website maintenance and most importantly lead generation. Since starting with Webimax, we have seen a 25% rise in new customers and an overall rise of 15% in billings.” – verified marketing manager user review.

9. Martal Group

Martal Group is a “sales-as-a-service” agency offering fully managed SDR teams, lead research, and multi-channel outbound execution. 

They specialize in B2B tech, SaaS, cybersecurity, AI, and IT companies that need predictable pipeline without hiring internally.

This lead generation agency combines human SDRs with intent data and curated databases, delivering weekly pre-qualified leads and booked meetings.

Category:

Outsourced SDR agency & sales development service.

Key features:

• Dedicated North American SDRs and account managers.
• Weekly delivery of pre-qualified, sales-ready leads.
• Intent-driven targeting using proprietary and partner datasets.
• Email, LinkedIn, and phone outreach.
• ICP development, lead research, and data enrichment.

Best for:

Tech and SaaS companies needing scalable outbound without building in-house teams.

Pricing:

• Custom.
• Most engagements start with a 3-month pilot, followed by a flat monthly fee depending on SDR involvement and appointment volume.

What users say:

“As a client, I have complete and open transparency and communication with my entire team. I also chose Martal over competitors as Martal utilizes and email, LinkedIn and live human calling model. Many competitors only utilize email or ask that you pay extra for sales calls… The inital investemnt in outsourced sales/lead generation is significant. Although I feel that Martal’s compensation model is far more fair and client-focused than much of its competition” – verifier user in consulting.

10. Cleverly

Cleverly is a LinkedIn-focused lead generation service and marketing agency that helps companies build targeted contact lists, run outreach sequences, and generate appointments through data-backed LinkedIn strategies. 

The agency is known for its A/B-tested copy, paid LinkedIn ads services, and recruitment-focused campaigns.

This makes Cleverly a good fit for teams that rely on LinkedIn as their primary prospecting channel and want done-for-you outreach without managing campaigns in-house.

Category:

LinkedIn lead generation agency & social outreach service.

Key features:

• LinkedIn contact list building and targeting.
• Done-for-you cold outreach sequences with A/B-tested copywriting.
• LinkedIn Ads management for demand generation.
• Dashboard with performance metrics and campaign monitoring.
• Zapier integration + basic CRM sync.

Best for:

• Companies that rely heavily on LinkedIn for outbound, recruiting, or top-of-funnel prospecting.

Pricing:

• Silver – $397/mo
• Gold – $697/mo
• Platinum – $997/mo

What users say:

“We’ve used Cleverly for 3 years and it’s been a game changer. We get 50 to 80 consistently, who are our ICP. It’s enabled us to scale once we hired another AE… It took me a bit to know how to respond to the incoming responses. However, after voicing this concern with Daniel he gave me pointers and it quickly became easy to run.” – verified director of client relations review.

11. Apollo 

Apollo.io is one of the most widely-used all-in-one sales engagement platforms. Combining a large B2B contact database with outbound automation, sequencing, enrichment, and analytics. This lead generation platform is popular with SDR teams, small agencies, and founders because it provides both data + outreach infrastructure in one place.

Teams use Apollo to find contacts, run cold email cadences, automate follow-ups, and score leads without needing multiple tools.

Category:

B2B contact data platform + sales engagement software.

Key features:

• Large prospect database with verified emails and phone numbers.
• Multichannel outreach (email + phone + tasks).
• Automated workflows and cadences.
• AI-assisted writing, enrichment, and prioritization.
• Chrome extension for LinkedIn + website scraping.
• CRM and Zapier integrations.
• Real-time enrichment for inbound leads.

Best for:

Teams that want an affordable, all-in-one outbound engine for prospecting + automated cold email campaigns.

Pricing:

• Free – Limited credits and features.
• Basic – $49/per user/mo.
• Professional – $79/per user/mo.
• Organization – $119/per user/mo.

What users say:

“Considering the breadth involved, Apollo’s data is very impressive. The data oriented processes are easy to use, and covers SMB and mid-market much better than its peers. The overall suite has broad capability, implementation is easy, and it integrates with many lead point solutions… Reporting is very difficult, and workflow rules are very difficult to audit. The Salesforce sync is erratic, but Apollo’s data is so comprehensive that many GTM teams will be faced with a parallel CRM” – verified RevOps manager / sales tech lead review.

12. LeadGenius

LeadGenius is a premium lead research and data enrichment platform that combines AI + human researchers to deliver highly customized B2B datasets. 

Unlike standard data providers, LeadGenius builds completely bespoke lead lists. Tailored to niche ICPs, complex buyer personas, and non-standard data points you can’t typically find in off-the-shelf databases.

Teams use LeadGenius when they need accurate, curated outbound data or when targeting very specific industries, roles, or signals.

Category:

Custom B2B data enrichment & lead research platform.

Key features:

• AI + human-powered data research for maximum accuracy.
• Custom datasets based on deep ICP criteria (firmographic, exegraphic, technographic, behavioral).
• Lead verification across email, phone, titles, and company details.
• Outreach-ready lists with personalized insights.
• Campaign support: list building, segmentation, and enrichment.

Best for:

Companies with niche markets, complex ICPs, or highly specific data needs that typical databases can’t match.

Pricing:

• Pricing depends on needs and scale. Packages are tailored to business size and requirements. Contact LeadGenius for a detailed quote.
• Online estimates suggest between $2,000/mo all the way up to $10,000/mo.

What users say:

“I like that there is live in person training and support available 24/7 to help you with the tool and make sure that you are making the most of it. The tool provided us with the necessary infrastructure needed to build a strategy for managing and acquiring leads… Although you are able to generate an ample amount of leads with this software, the leads are sometimes irrelevant which can be a waste of time.” – verified consultant review.

13. Salesloft

Salesloft is one of the leading sales engagement platforms SDRs, AEs, and RevOps teams use to streamline outbound sequences, manage pipelines, and standardize follow-up workflows. 

While it’s not a lead provider, it dramatically improves productivity, consistency, and conversion rates for teams running outbound at scale.

Companies typically pair Salesloft with a data provider like Cognism, Apollo, or ZoomInfo.

Category:

Sales engagement & sequencing platform.

Key features:

• Automated multichannel cadences (email, calls, social steps).
• Call recording, dialer, and conversation intelligence.
• Pipeline management + forecasting.
• Real-time analytics and rep performance dashboards.
• CRM integrations (Salesforce, HubSpot, Microsoft Dynamics).
• Buyer intent insights from engagement data.

Best for:

Outbound teams that need a structured, repeatable sales process and better execution across sequences.

Pricing:

• Custom.
• Pricing varies by seat, feature suite, and role (SDR vs. AE).

What users say:

“Salesloft is highly valued for its ability to streamline sales engagement by consolidating outreach across email, phone, and LinkedIn InMail into one platform. It combines automation with personalization through tailored cadences, enabling reps to scale outreach without losing the human touch… Frequent issues include email and calendar disconnects, which require repeated reconnections and disrupt workflows.” – verified senior account consultant review.

14. RocketReach

RocketReach is a large contact lookup tool designed to help sales, marketing, and recruiting teams find verified emails and phone numbers. 

It’s similar to lead generation tools like Kaspr, Lusha, and Apollo, but is known for strong global data and a simple, credit-based pricing model.

Teams use RocketReach to quickly fill missing contact details or enrich lists for outbound campaigns.

Category:

B2B contact data provider platform.

Key features:

• Verified email and phone lookup.
• Bulk enrichment for lists.
• Chrome extension for LinkedIn, Google, Crunchbase, and AngelList.
• API for embedding contact data in enterprise workflows.
• Outreach tools (basic messaging + templates).
• Email analytics.

Best for:

Teams needing fast, accurate contact discovery without full sales-engagement features.

Pricing:

• Essentials – $49/mo
• Pro – $99/mo
• Ultimate – $209/mo

What users say:

“I use RocketReach to enrich lists I gather from other sources. I like how easy it is to upload a new list and get it to work in a couple of minutes. I love that I have unlimited lookups in my plan, so I can always be on the hunt of new leads… Approving larger lists before enriching can be cumbersome. RocketReach shows you a review of your full list and you have to remove/fix leads that might have issues.” – verified SaaS lead gen copywriter review.

15. UpLead

UpLead is a high-accuracy B2B contact data provider known for its real-time email verification, strong technographic filters, and clean interface. 

Compared to other databases, UpLead positions itself on data quality over volume. Making it a favorite among SMBs and mid-market teams that want reliable prospect lists without wasting credits on bad data.

Its Chrome extension and enrichment workflows make it easy to quickly build outbound-ready lead lists.

Category:

B2B contact data provider & enrichment platform.

Key features:

• Real-time email verification (no credits charged for invalid emails).
• 140M+ contacts with firmographic, technographic, and industry filters.
• Chrome Extension for LinkedIn, company sites, and search results.
• Bulk list building + CSV enrichment.
• Technographics (software used by target companies).
• API access for enrichment and custom workflows.

Best for:

Teams that value data accuracy and want a reliable, cost-efficient contact database for outbound campaigns.

Pricing:

• Free – 7 day trial, limited credits.
• Essentials – $99/mo.
• Plus – $199/mo
• Professional – Custom.

What users say:

“I would recommend UpLead to any organization that is interested in increasing their brand recognition and initiating an integrated marketing solution. Their services have been utilized in both direct digital marketing initiatves and targeted marketing at certain demographics in big and small ways… The saved searches mostly come out with inconsistent results and midway amendments to queries are hard. I end up having to recreate them.” – verified network engineer review.

16. Lusha

Lusha is a popular AI sales intelligence platform offering fast, browser-based contact enrichment, direct dials, and simple list-building workflows. 

SDR teams like Lusha because it’s lightweight, easy to adopt, and delivers strong accuracy for email + phone numbers, especially when prospecting on LinkedIn.

Its Chrome extension is its standout feature, letting teams pull contact info instantly while browsing profiles, company pages, or search results.

Category:

B2B contact data provider & enrichment platform.

Key features:

• Chrome extension for instant email + phone lookup on LinkedIn.
• Bulk list building and CSV enrichment.
• Intent signals (powered through partnerships).
• Usage analytics for teams and managers.
• CRM integrations (HubSpot, Salesforce, Pipedrive).
• API for enterprise enrichment use cases.

Best for:

Outbound teams wanting fast, easy contact enrichment directly inside LinkedIn and company websites.

Pricing:

Pricing depends on how many credits you choose to go with. For around 1,500 credits per month, the pricing options are as follows:

• Free – 40 credits per month, limited features.
• Pro – 550 credits per month, $65/mo
• Premium – $175/mo
• Scale – Custom

What users say:

“I appreciate Lusha for its seamless management in prospecting, and its capability to function as a single piece management tool for marketing, sales, and recruitment hiring tasks. The CRM management integration with Lusha is very useful… I find the lack of drag-and-drop management in Lusha a bit limiting. It would be more convenient to easily schedule blocks according to user preferences.” – verified digital marketing strategist user review.

17. Snov.io

Snov.io is an all-in-one cold email and outreach platform combining email finding, verification, enrichment, sequencing, and warm-up tools. It replaces multiple tools, but focuses mainly on cold email at an affordable price point.

Its strength lies in simple UI, strong email deliverability tools, and the ability to both source contacts + run automated campaigns from one dashboard.

Category:

Email outreach software + B2B contact data provider.

Key features:

• Email finder + email verifier (high accuracy).
• Automated email outreach sequences and drip campaigns.
• Email warm-up to improve sender reputation.
• Technology checker (reveals software stack of target companies).
• Domain search + bulk enrichment.
• CRM integrations (HubSpot, Salesforce, Pipedrive, Zapier).
• Built-in lightweight CRM for small teams.

Best for:

Small to mid-size teams wanting a budget-friendly, all-in-one cold email platform with built-in data sourcing.

Pricing:

• Starter – $39/mo
• Pro – $99/mo
• Custom ultra – Custom

What users say:

“What I like most about Snovio is its simplicity combined with powerful features. It has streamlined our entire outbound workflow — from finding leads to automating follow-ups — in a way that’s both intuitive and effective. The quality of data and the flexibility of the tools are top-notch” – verified CEO review.

18. Leadium

Leadium is a B2B outbound agency specializing in omnichannel appointment setting, lead research, and SDR-as-a-service. They’re known for their hands-on strategy development, deep ICP work, and ability to scale outreach across email, phone, LinkedIn, and even gifting.

What makes Leadium stand out is their focus on top-of-funnel consulting + execution, making them ideal for companies that want both strategic guidance and done-for-you pipeline generation.

Category:

Outbound lead generation agency & outsourced SDR service.

Key features:

• Outbound appointment setting across email, LinkedIn, phone, SMS.
• Inbound lead management + qualification.
• Channel-optimized lead research and hand-built lead lists.
• Deliverability support + technical setup (DMARC, DNS, warm-up, etc.).
• Dedicated SDR, researcher, and success manager.
• ICP + persona development and messaging frameworks.
• CRM and sales stack implementation.

Best for:

Companies needing a versatile outbound partner that can build top-of-funnel systems and run the outreach for them.

Pricing:

• Custom. Have to fill in a form.
• Clutch.co reviews and online research says typically ranges from $10,000 to $50,000.

What users say:

“The team is highly responsive and easy to collaborate with. They operate with a professional, no-fluff approach and are always open to recalibrating based on feedback or data trends… At times, the early outreach cadence or messaging has required a few rounds of refinement to feel fully aligned with our brand tone and audience. While they are receptive and quick to adjust, it would be ideal if that calibration happened slightly faster upfront to reduce early friction in campaigns” – verified user in marketing and advertising review.

19. Pearl Lemon Leads

Pearl Lemon Leads is a specialized B2B lead generation and cold outreach agency focused on multi-channel outbound for companies in tech, finance, healthcare, real estate, and more. 

They run done-for-you campaigns across cold calling, email, and LinkedIn, with a strong emphasis on custom scripts and list-building.

They might be a fit if you’re looking to book meetings quickly in specific niches and nurture prospects for sales calls.

Category:

B2B lead generation & cold calling agency.

Key features:

• Cold calling campaigns with custom scripts and messaging.
• Email outreach and follow-up sequences.
• LinkedIn lead generation and profile targeting.
• Appointment setting and lead qualification.
• Multi-channel strategies including SEO/content support via the wider Pearl Lemon group.

Best for:

B2B companies that want a scrappy, outbound-heavy agency to run cold calling + email + LinkedIn.

Pricing:

• Custom.
• Online directories suggest pricing packages range from $1,000/mo all the way up to $10,000/mo.

What users say:

“I have worked with the lead generation and SEO/digital marketing aspects of Pearl Lemon. I have had a great experience with them because of their friendly attitudes and tenacity for improving their business, and mine. Have experienced great results with this company. They’re great in terms of SEO, especially because they are remote and can cater to anyone in the world.” – verified restaurant growth consultant review.

20. Callbox

Callbox is a one of the largest global B2B lead generation agencies, active since 2004 and serving enterprise and scaling companies in 60+ countries. 

They run account-based, multi-channel campaigns that combine email, phone, social, chat, webinars, and events. And have worked with enterprise companies like Acer, Intel, HP, and others.

Callbox is best suited to companies that want a fully managed, enterprise-grade outbound engine with deep experience in complex B2B sales cycles.

Category:

Global B2B lead generation & sales development agency.

Key features:

• Account-based marketing across email, phone, social, chat, and webinars. 
• Dedicated SDRs for appointment setting and qualification.
• Proprietary global B2B database and list building. 

Best for:

Enterprise and mid-market B2B companies needing global coverage and multi-touch campaigns.

Pricing:

• Custom.
• Pricing is typically based on region, SDR headcount, and channels (phone, email, webinars, etc.), with most engagements structured as monthly retainers. 

What users say:

“Very good responsiveness on email from the team, especially Hera. This meant we could always get a quick answer to a problem, even outside local office hours. Plentiful and useful feedback on the weekly huddles with plans for improvments… The editing of email templates was a lengthy process as many changes requested were not made the first time , so it took longer than necessary to get marketing materials approved.” – verified global marketing director review.

21. Leadfeeder by Dealfront

Dealfront (formerly Leadfeeder) is a website visitor identification and intent platform that reveals which companies are visiting your site, what pages they view, and how engaged they are. 

The “Web Visitors” / Leadfeeder module turns anonymous traffic into named accounts your sales team can target and reach out to.

This makes it a powerful B2B lead generation tool for teams already driving traffic via SEO, ads, or outbound, but needing to capture and act on intent more effectively.

Category:

Website visitor identification & intent-based lead generation software.

Key features:

• Identifies anonymous companies visiting your website based on IP. 
• 50+ behavioral and firmographic filters to prioritize high-intent accounts. 
• Real-time alerts when ICP accounts visit key pages.
• Automatic syncing qualified accounts to your CRM and sales tools.
• GDPR-compliant data processing for EU and global users. 

Best for:

B2B companies with meaningful website traffic that want to convert anonymous visitors into sales-ready accounts and run intent-driven outbound.

Pricing:

• Free – data only from last 7 days, max 100 identified companies.
• Paid – $115/mo. Unlimited visits data storage and unlimited users.

What users say:

“DealFront (I’ve been using it since 2015 as Leadfeeder) stands out in the lead generation software market with its robust features designed to enhance sales and marketing efforts… Some users might experience concerns regarding the accuracy of identifying anonymous visitors – which I also sometimes experience.” – verified CEO review.

22. SalesRoads

SalesRoads is one of the most established U.S.-based B2B appointment setting and SDR outsourcing agencies, specializing in high-quality phone outreach, targeted outbound campaigns, and mid-enterprise appointment generation.

They’re known for their rigorous rep training, strict QA processes, and consultative calling style. Making this lead generation company a strong choice for brands that rely heavily on phone-first outbound.

Category:

Outsourced SDR agency & appointment setting service.

Key features:

• U.S.-based SDRs trained in consultative selling.
• Cold calling + multi-touch follow-up sequences.
• Appointment setting and SQL qualification.
• List building + lead research.
• Dedicated account director + detailed reporting.

Best for:

Enterprise companies that want high-quality phone outreach and need a reliable U.S.-based team to run top-of-funnel pipeline generation.

Pricing:

• Full SDR Appointment Setting – $9,500 / 4 weeks
• Market Research Lead Generation – $9,500 / 4 weeks

What users say:

“We asked a lot of SalesRoads and they remained dedicated and focused on our needs as a client right up until the very end. It was not uncommon to receive emails or Slacks from the SR leadership team at all hours of the day… Some of their methods and procedures are older school, but they delivered great results. In fact, they helped us achieve all time company records for most demos scheduled, held, and wins…” – verified user review in insurance.

23. Gripped

Gripped is a B2B growth and inbound marketing agency built for SaaS, tech, and service businesses wanting to scale demand generation, SEO, and inbound pipeline.

Instead of purely outbound, Gripped focuses on content-led growth, organic traffic, conversion optimization, and long-term lead generation systems.

Category:

Inbound marketing & B2B demand generation agency.

Key features:

• SEO strategy + technical optimization.
• Content creation (blogs, guides, landing pages).
• Conversion rate optimization across pages and funnels.
• Paid search + paid social campaigns.
• Marketing automation setup and workflows (HubSpot specialist).

Best for:

SaaS and tech companies wanting sustainable inbound pipeline instead of fully outbound-heavy lead generation.

Pricing:

• Specific Expertise – From £3,000/mo
• Growth Package – From £7,500/mo
• Scale Package – From £15,000/mo

What users say:

“They took an intelligent and strategic view in executing each task and had impressive content strategy experts.” – verified head of marketing user review.

24. Seamless

Seamless is an AI-powered B2B contact data platform that continuously crawls the web in real time to deliver verified emails, phone numbers, and company insights.

Unlike static databases, Seamless positions itself as a “live search engine for B2B leads,” making it popular with SDR teams that need high-volume prospecting at scale.

Category:

AI-powered B2B contact data provider.

Key features:

• Real-time email + phone number discovery.
• Chrome extension for LinkedIn, company websites, and search results.
• Unlimited search with credit-based exports.
• AI-driven data enrichment for company and contact insights.
• Integrations with HubSpot, Salesforce, Outreach, and Salesloft.
• Bulk list building and CSV enrichment.

Best for:

Teams that need large-scale prospecting and prefer real-time data sourcing over traditional static databases.

Pricing:

• Custom, have to contact sales.
• Online sources say pricing ranges from $99/per user/mo to $147/mo

What users say:

“Real time data accuracy and chrome extension make my job so much easier. As someone managing partnerships, I used to get really frustrated when contact information was outdated and I couldn’t reach potential retail partners effectively. This tool solved that problem for me… Data accuracy isn’t always perfect, especially for smaller companies in our niche” – verified Sr. social media strategist review.

25. Clay

Clay is one of the most powerful lead generation automation tools used by advanced outbound teams.

It combines data enrichment, workflow automation, AI personalization, scraping, and 200+ data sources into one platform. Letting teams build highly targeted outbound campaigns with dynamic, personalized data at scale.

Clay has become extremely popular for agencies, growth teams, and SDRs running multi-step enrichment workflows.

Category:

B2B enrichment for GTM teams, automation, and AI personalization platform.

Key features:

• 200+ data sources (LinkedIn, Apollo, Google Maps, Clearbit, company sites, job postings, etc.).
• AI-based message personalization with dynamic variables.
• Custom scraping and enrichment workflows (“Clay Flows”).
• Automated lead list creation based on triggers and filters.
• CRM + outreach integrations (HubSpot, Salesforce, Outreach, Expandi, Smartlead).

Best for:

Teams that want to build hyper-personalized, data-rich outbound workflows with AI-driven messaging and multi-step enrichment.

Pricing:

• Free – Limited features and credits.
• Starter – $134/mo.
• Explorer – $314/mo.
• Pro – $720/mo.
• Enterprise – Custom credits.

What users say:

“Clay is hands-down the most powerful data enrichment and outreach automation platform I’ve used. Its modular, spreadsheet-like interface is intuitive yet incredibly powerful… The learning curve can be steep at first. While the UI is elegant, understanding how to structure your data and optimize performance takes some trial and error.” – verified business and technology advisor user review.

Choosing the Right B2B Lead Generation Solution for Your Business

To recap, there’s no single “best” B2B lead generation service or company. The best fit for your ICP, your channels, your budget, and how hands-on you want to be.

Some companies need a fully outsourced SDR team. While others just need better data. And some simply need to automate outbound without hiring more people.

Hopefully, this guide helped you understand B2B lead generation services and companies in 2025.

If you want to outsource everything, many of the agencies listed above are great options.

But if you’d rather keep your outbound in-house, stay flexible, save money, and still automate 80% of the work, then a tool like Expandi gives you the best of both worlds:

• Multichannel LinkedIn + email outreach.
• Smart automation and safe limits.
• Built-in personalization and sequencing.
• No hiring, no long-term contracts.

So if you’re looking to run your own lead generation at scale, give Expandi a try.

Learn more, and claim your free, 7-day trial here.

FAQ: B2B Lead Generation Services