Open-Source Alternatives
Free Alternative to Auth0
6 free & open-source projects that replace Auth0.
Compare at a Glance
| vs Auth0 |  zitadel |  logto |  corsair |  tinyauth |  openauth |  cerbos |
|---|---|---|---|---|---|---|
| Stars | 15k | 15k | 13k | 8.3k | 7.4k | 4.6k |
| Forks | 1.3k | 1.2k | 668 | 274 | 314 | 215 |
| Contributors | 30 | 30 | 30 | 30 | 30 | 30 |
| Last Commit | Feb 8, 2026 | Mar 6, 2026 | Aug 30, 2026 | Mar 6, 2026 | Jul 18, 2025 | Mar 6, 2026 |
| License | AGPL-3.0 | MPL-2.0 | NOASSERTION | GPL-3.0 | MIT | Apache-2.0 |
| Language | Go | TypeScript | TypeScript | Go | TypeScript | Go |
Tired of the high costs and complexity of proprietary authorization services like Auth0?
Cerbos offers a powerful, open-source policy-based authorization solution designed for modern applications. It empowers developers to define, manage, and enforce granular access control policies with ease, integrating seamlessly into any tech stack.
- 👮Policy-based authorization
- 🔐Fine-grained access control
- ⚙️Manage app permissions
- 🧑💻Developer-friendly API
- 🚀Scalable policy engine
With Cerbos, you get enterprise-grade security and flexibility without vendor lock-in or recurring subscription fees. It's free and yours to control, forever.
Discover how Cerbos can revolutionize your application security on Fossy. Explore it today! 🔗 https://fossy.dev/cerbos/cerbos
#OpenSource#Authorization#IAM#Security#PolicyAsCode#AccessControl#DevOps#FreeSoftware
