Show HN: Stack Auth – the open-source Auth0/Clerk alternative
Hi HN! We’re Zai and Konsti, and we’re building Stack Auth [0], an open-source managed authentication & authorization platform.
Stack Auth was born out of years of frustration with the incumbents. We wanted to build something that is developer-friendly and open-source at the same time, yet fully managed with multi-tenancy, role-based access control, impersonation, webhooks, welcome e-mails, etc.
User data is quite critical, and you generally don’t want to get locked into a specific vendor. On the other hand, building and maintaining auth infrastructure on-top of existing libraries is tedious work as you grow. Hence:
Stack is 100% open-source, licensed under MIT and AGPL.
You can self-host, or choose to use our managed hosting.
If you choose the latter, there’s absolutely no reliance on us; if you think we’re doing a bad job at any point in time, you can export all your data and start self-hosting instead.
Also, we’re more than just authentication — we have authorization built-in (permissions, teams, …), and a frontend to manage your users (with impersonation, filtering, …). You can use any language to access these features through our REST API [1].
We also have a bunch of components for sign in, password reset, organizations. For now, we only support Next.js frontends and backends in any language with our API, though our docs also list the client endpoints, and some people have been building frontends for other languages.
For more info, check out our GitHub repo [2]. We’re really early, but have a handful of production users already. Any feedback is highly appreciated!
Thanks all!
[1] https://docs.stack-auth.com/rest-api/auth
[2] https://github.com/stack-auth/stack
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