ZITADEL
Integrate user management and authentication easy as pie
ZITADEL launched on August 11, 2022 with 82 votes, #462 of 3,307 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 4 years on.
What it does
Let's add users to your apps. ZITADEL gives developers all they need to integrate identity management. Open Source or as serverless cloud service. You want auth that's quickly set up like Auth0 but open source like Keycloak? Look no further.
ZITADEL - Identity infrastructure, simplified for you. - zitadel/zitadel
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Stack, an open-source Clerk/Firebase Auth alternative2024 · stack-auth.com · ▲144Hey 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!

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MonoCloud for StartupsJul 2026 · monocloud.com · ▲167One identity layer for your customers, APIs, and agents
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