Stack Auth
Open-source Auth0/Clerk Alternative
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Stack Auth (YC S24) - Open-source Auth0/Clerk alternative

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Stack Auth is managed user authentication & authorization. It is developer-friendly and fully open-source & self-hostable. Within 5 minutes, you can setup Stack and use its components such as <SignIn /> and <AccountSettings />.

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Congrats on launch of Stack Auth.....
Nice, user impersonation is an awesome feature. We’re going to try this out
I'm curious why you guys decided to go in more of the Auth0/Clerk direction than the Keycloak one? It seems that there are a bunch of open source alts to Auth0/Clerk, but not really Keycloak and Keycloak is where I have all the pain.
Maker
Can I ask what kind of issues you have with Keycloak? We are indeed a Keycloak alternative that is much more developer-friendly. We focus on both the frontend and backend, whereas Keycloak only focuses on the backend. The reason we didn't market ourselves that way is that most of our target users (Next.js developers) aren't familiar with Keycloak.
Is this available for Vite or is it only nextjs?
Awesome! Congrats team
Gotta upvote another open source project that makes it easy to build auth related functions for developers who honestly don't have much resources to deploy in this area but auth is so crucial to so many industries. Congrats and team on the team!
A straightforward tool for managing user authentication. Great job, Zai and Konsti!
Just the thing I was looking for! I will test it and share my opinion!
, Stack Auth is a breath of fresh air for developers! It’s so easy to set up and customize, plus being open-source and self-hostable is a huge win. Good Job team!
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