head to head · open source
Logto vs cas
Logto has 14,599 GitHub stars, 1,212 forks, 183 open issues and last shipped today. cas has 11,367 stars, 3,959 forks, 17 open issues and last shipped today. Logto leads on adoption by 28% (14,599 vs 11,367 stars). Logto is written in TypeScript under MPL-2.0; cas is written in Java under Apache-2.0. Logto has attracted 8% as many forks as stars, cas 35%. Logto was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 4 topic tags (authentication, authorization, mfa, oauth2), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 20902 open source comparisons
Side by side
| Logto | cas | |
|---|---|---|
| GitHub stars | ★ 15K | ★ 11K |
| License | MPL-2.0 | Apache-2.0 |
| Written in | TypeScript | Java |
| Last push | 2026-09-20 | 2026-09-20 |
| Forks | ⑂ 1.2K | ⑂ 4.0K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Logto if
- You weight community size — 15K stars and counting
- You want the MPL-2.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick cas if
- You want the cas feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and cas fits your workflow better
About Logto
Logto is an open source authentication and authorization infrastructure for SaaS and AI applications. It is written in TypeScript, licensed under MPL 2.0, and positioned as an open alternative to Auth0. The project sits in the identity and access management ecosystem, where it provides a central service for login, consent, tokens, user directories, and access control.
read the full Logto overview →
About cas
Apereo CAS is the open source Java server that implements the Central Authentication Service protocol and serves as an enterprise identity provider and single sign on platform for the web, aimed at organizations that need one authentication and authorization layer across many applications.
More in Security & Privacy
Related comparisons
More Identity & Access Management (IAM) projects
Compare either of these against the rest of the Identity & Access Management (IAM) field.
Frequently asked questions
Is Logto or cas more popular?
Logto has 14,599 GitHub stars and cas has 11,367. Logto has the larger community by that measure.
Are Logto and cas free?
Both are open source. Logto is licensed under MPL-2.0 and cas under Apache-2.0. Neither carries a licence fee.
What is the difference between Logto and cas?
Logto is written in TypeScript and cas in Java. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Logto or cas?
Choose Logto if you want the larger community (14,599 stars) or its MPL-2.0 licence terms. Choose cas if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.