head to head · open source
Zitadel vs voidauth
Zitadel has 15,084 GitHub stars, 1,326 forks, 1,171 open issues and last shipped 2 days ago. voidauth has 2,843 stars, 124 forks, 60 open issues and last shipped 3 days ago. Zitadel leads on adoption by 431% (15,084 vs 2,843 stars). Zitadel is written in Go under AGPL-3.0; voidauth is written in TypeScript under AGPL-3.0. Zitadel has attracted 9% as many forks as stars, voidauth 4%. Zitadel was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (authentication, oidc), 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
| Zitadel | voidauth | |
|---|---|---|
| GitHub stars | ★ 15K | ★ 2.8K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | Go | TypeScript |
| Last push | 2026-09-23 | 2026-09-22 |
| Forks | ⑂ 1.3K | ⑂ 124 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Zitadel if
- You weight community size — 15K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick voidauth if
- You want the voidauth feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and voidauth fits your workflow better
About Zitadel
Zitadel is an open source identity and access management platform written in Go and released under the AGPL 3.0 license. It lives in the open source IAM ecosystem and provides identity infrastructure for developers who need to operate an authentication and authorization layer themselves.
read the full Zitadel overview →
About voidauth
VoidAuth is an open source, self hosted single sign on and user management provider, written in TypeScript under the AGPL 3.0 licence, that places one authentication service in front of the self hosted applications of homelab operators, self hosters and small teams.
read the full voidauth overview →
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Frequently asked questions
Is Zitadel or voidauth more popular?
Zitadel has 15,084 GitHub stars and voidauth has 2,843. Zitadel has the larger community by that measure.
Are Zitadel and voidauth free?
Both are open source. Zitadel is licensed under AGPL-3.0 and voidauth under AGPL-3.0. Neither carries a licence fee.
What is the difference between Zitadel and voidauth?
Zitadel is written in Go and voidauth in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Zitadel or voidauth?
Choose Zitadel if you want the larger community (15,084 stars) or its AGPL-3.0 licence terms. Choose voidauth if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.