Open source idp projects
Every project in the registry tagged idp, ranked by real GitHub adoption.
OpenID Connect (OIDC) identity and OAuth 2.0 provider with pluggable connectors
The most user-friendly OpenID Connect Certified™ and OAuth 2.0 provider that lets users sign in to your applications with passkeys.
LLM-Driven Extraction of Unstructured Data — Built for API Deployments & ETL Pipeline Workflows
Node.js library for SAML SSO
Frequently asked questions
How many open source idp projects are there?
This registry tracks 4 projects tagged idp, with 28,225 GitHub stars between them. The most-adopted is dex at 11,097 stars.
Are these idp projects free to use?
Yes — 4 of the 4 carry an explicit open-source licence across 4 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which idp project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these idp projects still maintained?
4 of the 4 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.