head to head · open source
Authentik vs fido2-net-lib
Authentik has 25,647 GitHub stars, 2,029 forks, 1,074 open issues and last shipped yesterday. fido2-net-lib has 1,452 stars, 202 forks, 20 open issues and last shipped 2 days ago. Authentik leads on adoption by 1,666% (25,647 vs 1,452 stars). Authentik is written in Python under a custom or non-standard licence; fido2-net-lib is written in C# under MIT. Authentik has attracted 8% as many forks as stars, fido2-net-lib 14%. Authentik was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| Authentik | fido2-net-lib | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 1.5K |
| License | Custom / other | MIT |
| Written in | Python | C# |
| Last push | 2026-09-19 | 2026-09-18 |
| Forks | ⑂ 2.0K | ⑂ 202 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Authentik if
- You weight community size — 26K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick fido2-net-lib if
- You want the fido2-net-lib feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and fido2-net-lib fits your workflow better
About Authentik
Authentik is an open source Identity Provider (IdP) built for modern single sign on (SSO) workflows. It operates in the identity and access management (IAM) ecosystem, offering a self hosted alternative to commercial solutions like Auth0, Okta, and Entra ID. The project is written in Python and distributed under a mixed MIT/CC BY SA/enterprise license model, with a core open source offering and an enterprise tier for advanced features and support.
read the full Authentik overview →
About fido2-net-lib
fido2 net lib is an open source, MIT licensed C library that provides a FIDO2 server and WebAuthn relying party implementation for .NET, aimed at developers who want passkey registration and sign in in ASP.NET Core, .NET Core and native .NET applications without writing the credential validation logic themselves.
read the full fido2-net-lib overview →
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Frequently asked questions
Is Authentik or fido2-net-lib more popular?
Authentik has 25,647 GitHub stars and fido2-net-lib has 1,452. Authentik has the larger community by that measure.
Are Authentik and fido2-net-lib free?
Both are open source. Authentik has no licence declared in this registry, and fido2-net-lib is licensed under MIT. Both are free to self-host.
What is the difference between Authentik and fido2-net-lib?
Authentik is written in Python and fido2-net-lib 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, Authentik or fido2-net-lib?
Choose Authentik if you want the larger community (25,647 stars) or its Custom / other licence terms. Choose fido2-net-lib if its feature set, stack or MIT licence fits better. Both are self-hostable.