head to head · open source
authelia vs fido2-net-lib
authelia has 29,496 GitHub stars, 1,532 forks, 137 open issues and last shipped today. fido2-net-lib has 1,458 stars, 201 forks, 20 open issues and last shipped yesterday. authelia leads on adoption by 1,923% (29,496 vs 1,458 stars). authelia is written in Go under Apache-2.0; fido2-net-lib is written in C# under MIT. authelia has attracted 5% as many forks as stars, fido2-net-lib 14%. authelia was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (passkeys), 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
| authelia | fido2-net-lib | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 1.5K |
| License | Apache-2.0 | MIT |
| Written in | Go | C# |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 1.5K | ⑂ 201 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick authelia if
- You weight community size — 29K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- 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 authelia
<img alt="SLSA 3" src="
read the full authelia overview →
About fido2-net-lib
Passkeys FIDO2 .NET Library (WebAuthn) A fully working and battle tested library for passkeys (FIDO2 and WebAuthn) on .NET Releases & Change log 💡 Bitwarden Passwordless API The quickest way to get started with FIDO2 and WebAuthn is with the Bitwarden Passwordless API. It's free up to 10k users and a faster way to start using passkeys on your website or mobile app. Bitwarden Passwordless.dev supports .NET Framework as well as the latest .net 8+. Get started with passwordless.dev Purpose Our purpose is to enable passwordless sign in for all .NET apps (asp, core, native). To provide a developer friendly and well…
read the full fido2-net-lib overview →
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Frequently asked questions
Is authelia or fido2-net-lib more popular?
authelia has 29,496 GitHub stars and fido2-net-lib has 1,458. authelia has the larger community by that measure.
Are authelia and fido2-net-lib free?
Both are open source. authelia is licensed under Apache-2.0 and fido2-net-lib under MIT. Neither carries a licence fee.
What is the difference between authelia and fido2-net-lib?
authelia is written in Go 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, authelia or fido2-net-lib?
Choose authelia if you want the larger community (29,496 stars) or its Apache-2.0 licence terms. Choose fido2-net-lib if its feature set, stack or MIT licence fits better. Both are self-hostable.