head to head · open source
Logto vs TheIdServer
Logto has 14,656 GitHub stars, 1,214 forks, 183 open issues and last shipped yesterday. TheIdServer has 756 stars, 92 forks, 2 open issues and last shipped 3 days ago. Logto leads on adoption by 1,839% (14,656 vs 756 stars). Logto is written in TypeScript under MPL-2.0; TheIdServer is written in C# under Apache-2.0. Logto has attracted 8% as many forks as stars, TheIdServer 12%. Logto was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (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.
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Side by side
| Logto | TheIdServer | |
|---|---|---|
| GitHub stars | ★ 15K | ★ 756 |
| License | MPL-2.0 | Apache-2.0 |
| Written in | TypeScript | C# |
| Last push | 2026-10-07 | 2026-10-05 |
| Forks | ⑂ 1.2K | ⑂ 92 |
| 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 TheIdServer if
- You want the TheIdServer feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C#
- You evaluated both and TheIdServer 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 TheIdServer
TheIdServer is an open source identity and access management server for .NET teams that need to issue OpenID/Connect, OAuth2, WS Federation and SAML 2.0 tokens from a single self hosted system with a browser based admin interface.
read the full TheIdServer overview →
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Frequently asked questions
Is Logto or TheIdServer more popular?
Logto has 14,656 GitHub stars and TheIdServer has 756. Logto has the larger community by that measure.
Are Logto and TheIdServer free?
Both are open source. Logto is licensed under MPL-2.0 and TheIdServer under Apache-2.0. Neither carries a licence fee.
What is the difference between Logto and TheIdServer?
Logto is written in TypeScript and TheIdServer in C#. 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 TheIdServer?
Choose Logto if you want the larger community (14,656 stars) or its MPL-2.0 licence terms. Choose TheIdServer if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.