Stack, an open-source Clerk/Firebase Auth alternative
Hey HN! Happy to finally launch Stack. We made it because we like to put apps into production quickly, and authentication & user management was taking up way too much time. We have components like and that automatically adapt to whatever theme & design system you're using. Check the blog post to see the example with Radix UI and Joy UI. Also, there's an admin dashboard for monitoring and editing accounts. Stack is 100% AGPL/MIT-licensed, so you can self-host it. Cheers!
Stack, an open-source Clerk/Firebase Auth alternative launched on April 14, 2024 with 144 votes, #360 of 4,347 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
Stack is an open-source authentication and user management platform designed as an alternative to Clerk and Firebase Auth. It provides pre-built components like sign-in and account settings forms that automatically adapt to different design systems and themes. The tool includes an admin dashboard for account monitoring and editing, and can be fully self-hosted under AGPL/MIT licensing. Stack aims to reduce development time spent on authentication so developers can focus on building applications.
written from the facts on this page · September 2026
From the sources
If you build lots of projects, it's likely that you've spent a significant amount of time on working with user logins. Despite how crucial it is, it's hard to find a service that has the features y...
In the maker’s words, at launch
Hey HN! Happy to finally launch Stack. We made it because we like to put apps into production quickly, and authentication & user management was taking up way too much time. We have components like <SignIn /> and <AccountSettings /> that automatically adapt to whatever theme & design system you're using.…
Does a similar job
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- CAClerk – all of user management as-a-service, not just authentication2021 · clerk.dev · ▲582
The task came with a sense of helplessness. We knew what "great" looked like, but it was impractical to build all of that functionality.
Open-source Firebase Alternative? It's here2022 · github.com · ▲153Announcing Appwrite 0.14 with 11 Cloud Function Runtimes! 🥳
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