head to head · open source
Zitadel vs voidauth
Zitadel has 15,541 GitHub stars, 1,420 forks, 1,171 open issues and last shipped 5 days ago. voidauth has 2,906 stars, 132 forks, 60 open issues and last shipped 2 days ago. Zitadel leads on adoption by 435% (15,541 vs 2,906 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 5%. voidauth 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 | ★ 16K | ★ 2.9K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | Go | TypeScript |
| Last push | 2026-11-04 | 2026-11-07 |
| Forks | ⑂ 1.4K | ⑂ 132 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Zitadel if
- You weight community size — 16K 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
The Identity Infrastructure for Developers ZITADEL is an open source identity and access management platform built for teams that need more than basic auth. Whether you're securing a SaaS product, building a B2B platform, or self hosting a production IAM stack — ZITADEL gives you everything out of the box: SSO, MFA, Passkeys, OIDC, SAML, SCIM, and a battle tested multi tenancy model. No vendor lock in. No compromise on control. Just a robust, API first identity platform you can own. 🏡 Website 💬 Chat 📋 Docs 🧑💻 Blog 📞 Contact Why ZITADEL We built ZITADEL to handle the hardest IAM challenges at scale —…
read the full Zitadel overview →
About voidauth
Single Sign On for Your Self Hosted Universe Website Source Code What is VoidAuth VoidAuth is an open source SSO authentication and user management provider that stands guard in front of your self hosted applications. It is easy to use for admins and end users, supports nice to have features like passkeys, user invitation, self registration, email support, and more! Features: 🌐 OpenID Connect (OIDC) Provider 🔄 Proxy ForwardAuth 📖 LDAP Directory Server 👤 User and Groups Management 📨 User Self Registration and Invitations 🎨 Customizable (Logo, Title, Theme Color, Email Templates) 🔑 Multi factor…
read the full voidauth overview →
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Frequently asked questions
Is Zitadel or voidauth more popular?
Zitadel has 15,541 GitHub stars and voidauth has 2,906. 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 (15,541 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.