Open-source Prospecting Enrichment tools

The best open-source Prospecting Enrichment tools, curated: 7 in the registry, including AfterShip/email-verifier, enthec/webappanalyzer, Anysite launches: B2B list building and enrichment by chatting to an agent (SaaS, MCP-native). Every tool is open-source; each entry lists license, self-hostability, and links.

7 tools · ← all categories · JSON

• AfterShip/email-verifier · tool, 2026-09-15
  MIT-licensed Go library that verifies email addresses without sending mail: syntax checks, MX records, SMTP lookups with catch-all detection, auto-updated disposable-domain lists, role-account detection, typo suggestions and SOCKS5 proxy support. Positions itself as broader-featured than competing Go libraries.
• enthec/webappanalyzer · tool, 2026-09-13
  GPL-3.0 database of regex technology fingerprints — HTML, JS variables, headers, cookies, DOM, DNS and meta tags — for detecting what a website runs. The community continuation of Wappalyzer after it went private in August 2023, with an explicit commitment to stay open source. A technographics backbone for prospecting and security tooling.
• Anysite launches: B2B list building and enrichment by chatting to an agent (SaaS, MCP-native) · news, 2026-09-11
  Anysite launched on Product Hunt: describe an ICP in plain language and its agent builds and enriches B2B prospect lists from 3,500+ endpoints across 650+ live sources, returning typed fields (people, companies, titles, emails). MCP-native (Claude, Cursor) plus REST API. SaaS-only, from $30/mo with a 7-day trial — not open source.
• DataForge · tool, 2026-09-03
  Only OSS enrichment w/ open data (US gov registries)
• Inspector · tool, 2026-09-03
  Only real product in scoring cluster; PLG first-party signals
• OpenCheck · tool, 2026-09-03
  KYB tool over registry DATA; no contact emails
• URL Intelligence Agent · tool, 2026-08-31
  An evidence-first enrichment agent that turns a public URL into structured, sourced intelligence: entity resolution, contact/team extraction, tech-stack detection, brand assets, SEO/security signals, and relationship graphs — with confidence scores and provenance. Runs as CLI, HTTP API, MCP server, or self-hosted service.