Free B2B lead generation tools

Yes. As of October 2026, there are several genuinely usable free B2B lead-generation tools—although most impose monthly credit, contact, or outreach limits.

Tool	Free offering	Best for	Main limitation
Apollo.io	Free plan with prospect database, contact search, sequencing, Chrome extension	All-in-one prospecting	Usage/credit limits on free tier
Hunter	50 credits/month, email finding & verification, sequences, CRM, Chrome extension	Finding/validating business emails	Only 50 credits/month; advanced filters/features restricted
HubSpot	Free CRM, contact management, forms, landing pages, email tracking, meeting scheduling	Managing and capturing leads	It isn't primarily a prospect database
Snov.io	Free prospecting/verification and outreach functionality	Email prospecting + automation	Credit and feature limits
Lusha	Small recurring credit allowance	Contact/company data	Small free allowance

My picks

🥇 Best overall: Apollo
Apollo is probably the strongest choice if you want to go from "find companies → identify decision makers → get contact information → send outreach" in one system. Its current free offering includes access to its B2B database, prospecting filters, Chrome extension, and email sequencing. Apollo says its database contains 240M+ contacts and 30M+ companies.www.apollo.io

🥈 Best for email discovery: Hunter
Hunter is particularly attractive if you already have a list of companies and need to discover/verify the right email addresses. Its current free plan provides 50 credits per month, plus email finding, verification, sequences, a lightweight CRM, API access, and a Chrome extension.help.hunter.io

🥉 Best free CRM: HubSpot
If you generate leads through your website, referrals, LinkedIn, events, etc., HubSpot's free CRM is excellent for storing, organizing, tracking, and following up with those leads. HubSpot says the free CRM has no expiration date and includes contact management, deal pipelines, email tracking, templates, scheduling, forms, and other lead-generation tools.www.hubspot.com

A $0/month stack I'd actually use

You don't necessarily need one giant platform:

Apollo → Hunter → HubSpot

1. Apollo: Build a targeted list of companies and decision-makers.
2. Hunter: Verify/find emails when Apollo doesn't have what you need.
3. HubSpot: Put qualified prospects into your CRM and track conversations/deals.

That gives you a surprisingly capable outbound system without paying for software. The catch is volume: free tiers work very well for targeted prospecting but become restrictive once you're trying to generate hundreds or thousands of fresh contacts every month.help.hunter.io

If you tell me what kind of B2B leads you're looking for (industry, geography, and target job title), I can also identify the best completely free stack for finding those specific prospects, including options that don't require a credit card.