Open source iam projects
Every project in the registry tagged iam, ranked by real GitHub adoption.
Framework-agnostic authentication for TypeScript applications
Apache Casbin: an authorization library that supports access control models like ACL, RBAC, ABAC.
An open-source Agent-first Identity and Access Management (IAM) /LLM MCP & agent gateway and auth server with web UI supporting OpenClaw, MCP, OAuth, OIDC, SAML
Pomerium is an identity and context-aware access proxy.
Secure, policy-based access control for modern applications
Small tool to convert an IAM Policy in JSON format into a Terraform aws_iam_policy_document
OpenID/Connect, OAuth2, WS-Federation and SAML 2.0 server based on Duende IdentityServer and ITFoxtec Identity SAML 2.0 with its admin UI
The Janssen Project is a home for open source IAM components, featuring Auth Server (OAuth/OpenID), Agama low-code identity orchestration, and the Cedarling pol
AWS-compatible cloud APIs on infrastructure you control
Related tags
Frequently asked questions
How many open source iam projects are there?
This registry tracks 10 projects tagged iam, with 87,191 GitHub stars between them. The most-adopted is Better Auth at 30,553 stars.
Are these iam projects free to use?
Yes — 10 of the 10 carry an explicit open-source licence across 3 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 iam 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 iam projects still maintained?
10 of the 10 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.