Open Source
Sales tools you can self-host, fork, and inspect. Build your AI sales stack on transparent, open-source foundations.
BlitzProspector
Self-hosted Apollo.io-style prospecting UI built on top of the Blitz API.
Frappe CRM
Frappe CRM is an open-source, self-hostable CRM with unlimited users, sales pipelines, and a REST API.
Revenue OS
Open-source AI prospecting agent — a self-hostable alternative to HubSpot Prospecting Agent, Artisan, and 11x.
agent-outbound
Config-driven outbound pipeline for Claude Code — source, enrich, score, and sequence outreach via MCP tools.
DataLayer
B2B data enrichment MCP server — 60M companies, 300M contacts, buying intent signals.
EnrichAPI
Open source lead intelligence API — company URL in, structured outreach brief out.
YALC
CLI-first, AI-native open-source data enrichment and GTM operating system.
OpenOutreach
Self-hosted open-source LinkedIn automation with AI-powered messaging.
Fire Enrich
Open-source AI data enrichment engine — a self-hosted alternative to Clay.
coldr
Run, preview, and ship cold email campaigns straight from your terminal.
Crawl4AI
Open-source LLM-friendly web crawler and scraper.
EspoCRM
Open source CRM with a modern, user-friendly interface and powerful API.
LeadGenGPT
Open-source AI tool for automating cold email outreach and lead generation.
n8n
Open-source workflow automation with a powerful API.
Nango
Open-source product integration platform for AI agents.
QRev
Early-stage AI-first open-source CRM with MongoDB-based architecture.
Radiant AI CRM
Open-source AI-powered CRM built for modern sales teams.
Signal
Open-source AI sales intelligence and outreach automation — the open alternative to Clay, Apollo, and Outreach.
SuiteCRM
The world's most popular open-source CRM with full-featured sales automation.
Twenty
Modern open-source CRM built for the community.