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Open source2 of 5260 tools

Offered under an open-source licence, per the pricing page; any paid tier is hosting or support.

Ranked by use

  • ragfish.ai

    ragfish.ai

    Self-hosted platform that ingests documents, spreadsheets, and databases to build retrieval-augmented generation assistants.

    Developer toolsOpen source

    EmergingActively maintainedsince 2026

    #557 of 3011

  • MaruCheck

    marucheck.dev

    Independently verifies AI-generated code changes against approved product behavior contracts.

    Developer toolsOpen source

    EmergingActively maintainedsince 2026

    #991 of 3011

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one row at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.