Open source authz projects
Every project in the registry tagged authz, ranked by real GitHub adoption.
Apache Casbin: an authorization library that supports access control models like ACL, RBAC, ABAC.
Secure, policy-based access control for modern applications
Modern data layer for TypeScript apps - type-safe ORM, built-in access control, automatic query services
Related tags
Frequently asked questions
How many open source authz projects are there?
This registry tracks 3 projects tagged authz, with 27,933 GitHub stars between them. The most-adopted is casbin at 20,396 stars.
Are these authz projects free to use?
Yes — 3 of the 3 carry an explicit open-source licence across 2 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 authz 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 authz projects still maintained?
3 of the 3 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.