Open Source Alternative

Keycloak

Identity and access management server

Keycloak provides single sign-on, user federation, social login and fine-grained authorization using OpenID Connect and SAML. It is a CNCF project and runs on your own infrastructure.

authssooidcsaml

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Supabase

Dev tools

Postgres backend with auth, storage and realtime

vs FirebaseOpen sourcebackendpostgres

Appwrite

Dev tools

Backend server for web and mobile apps

vs FirebaseOpen sourcebackendauth

Coolify

Dev tools

Self-hostable platform to deploy apps and databases

vs Heroku, VercelOpen sourcepaasdeployment

Dokploy

Dev tools

Self-hosted deployment platform on Docker

vs Heroku, VercelOpen sourcepaasdocker

Gitea

Dev tools

Lightweight self-hosted Git service

vs GitHub, BitbucketOpen sourcegitself-hosted

GitLab Community Edition

Dev tools

Self-hosted DevOps platform, free edition

vs GitHub, BitbucketOpen sourcegitci-cd