Open source oauth2 projects
Every project in the registry tagged oauth2, ranked by real GitHub adoption.
Postgres-powered backend platform for production apps
Framework-agnostic authentication for TypeScript applications
Take control of your identity with a secure, flexible solution
Secure, customizable identity infrastructure for developers
Secure, seamless authentication for modern applications
Build product integrations with 500+ APIs in hours
Build reliable AI agents with unified tool integration
Managed identity and access management for any app
Self-hosted application server for schema-driven APIs, identity, files, automation, integrations, realtime, metering, and protocols.
Related tags
Frequently asked questions
How many open source oauth2 projects are there?
This registry tracks 9 projects tagged oauth2, with 216,153 GitHub stars between them. The most-adopted is Supabase at 109,900 stars.
Are these oauth2 projects free to use?
Yes — 7 of the 9 carry an explicit open-source licence across 5 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 oauth2 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 oauth2 projects still maintained?
8 of the 9 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.