Sales & Customers · Lead Generation & Prospecting
0 paid against 0 free you can run yourself.
Paid against free › Sales & Customers › Lead Generation & Prospecting › Enrichment · Talking to customers on Repo Radar
Prices and free tiers as checked, dated on each review.
Paid tools for this job are being added. The free alternatives below are ready to use.
Free to use. You run it on your own server.
They do this job.
No direct alternative yet.
A second choice: they cover part of this job or are a building block for it.
E-mails, subdomains and names Harvester - OSINT
★ 18kFreeCHreacherhq/check-if-email-existsCheck if an email address exists without sending any email, written in Rust. Comes with a ⚙️ HTTP backend.
★ 10.2kFreeOPdebpalash/OpenGTMOpen-source, self-hosted alternative to Clay.com for lead sourcing, enrichment waterfalls, AI research, buying signals, and outbound automation.
★ 62FreeDANuclear-Marmalade/dataforgeFree open-source business data enrichment engine. The open-source alternative to Apollo, ZoomInfo, and Clearbit.
★ 58FreeENmasteranime/enrichment-kitOpen-source Clay.com alternative. Multi-vendor enrichment waterfalls — bring your own API keys, pay ~85% less per lead.
★ 42FreeVEomm9846/verdictOpen-source Apollo alternative: cold-outreach engine that verifies every mailbox before sending. Email discovery, SMTP verification, bounce-proof delivery. Self-hosted or hosted. Free Hunter.io / Instantly / Clay alternative.
★ 10FreeTRmeysam81/trawlTrawl Chrome Extension. Free, privacy-first alternative to Hunter.io — extract, validate, and export emails from any web page.
★ 7FreeOne job at a time: the paid tools worth paying for, the free ones you can run yourself, and who should pick which.
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