open source auth server - SERP Analysis

https://www.permit.io/blog/top-12-open-source-auth-tools

https://www.keycloak.org/

https://www.reddit.com/r/selfhosted/comments/1hvjiol/which_opensource_authentication_solution_to/

https://supertokens.com/

https://www.authelia.com/

https://goauthentik.io/

https://opensourcealternative.to/alternativesto/auth0

https://github.com/casbin/awesome-auth

https://auth0.com/opensource

https://www.ory.sh/open-source

https://authjs.dev/

https://github.com/ory/hydra

https://www.aserto.com/blog/five-oss-authentication-authorization-projects

https://blog.logto.io/top-oss-iam-providers-2025

https://auth0.com/

https://supertokens.com/blog/self-hosted-authentication

https://stack-auth.com/

https://news.ycombinator.com/item?id=25848781

https://geekflare.com/cybersecurity/open-source-oauth-solutions/

https://www.ory.sh/

https://openid.net/developers/how-connect-works/

https://www.helpnetsecurity.com/2024/05/22/authelia-open-source-authentication-authorization-server/

https://gluu.org/

https://workos.com/blog/source-sso-solutions

https://www.youtube.com/watch?v=KlDJ4K45M_o

https://openid.net/developers/certified-openid-connect-implementations/

https://ente.io/auth/

https://permify.co/post/open-source-identity-access-management-iam-solutions-for-enterprises/

https://sourceforge.net/directory/authentication/

https://dev.to/supertokens/self-hosted-authentication-2bl2

https://blog.m5e.de/post/open-source-authentication-solutions/

https://casdoor.org/

https://appwrite.io/

https://next-auth.js.org/

https://oauth.net/2/

https://www.apereo.org/programs/software/cas

https://news.ycombinator.com/item?id=29392517

https://faun.pub/opensource-single-sign-on-sso-e52d39e1927

https://research.aimultiple.com/open-source-mfa/

https://supabase.com/auth

https://www.youtube.com/watch?v=5KtbmrUwYNQ

https://research.redhat.com/blog/article/open-source-authentication-exposed-how-open-source-developers-perceive-user-authentication/

https://lucia-auth.com/

https://www.mikecairns.us/2022/04/open-source-auth-server.html

https://sennovate.com/top-5-open-source-mfa-solutions/

https://developer.okta.com/docs/concepts/auth-servers/

https://hasura.io/blog/top-authentication-providers-building-apps-jwt

https://www.cerbos.dev/blog/auth0-alternatives

https://www.youtube.com/watch?v=lUO4hjA6bME

https://medium.com/%40hildamachando4/iam-can-i-go-open-source-30f5598a7ac7

https://www.ventureradar.com/keyword/Open%20source%20authentication

https://www.linuxlinks.com/networkauthenticationservers/

https://developers.google.com/identity/protocols/oauth2/web-server

https://fusionauth.io/guides/auth0-alternatives

https://serverfault.com/questions/312742/looking-for-opensource-2-factor-authentication-server

https://ninjaauth.com/sso-single-sign-on

https://getaegis.app/

https://firebase.google.com/docs/auth

https://en.wikipedia.org/wiki/OAuth

https://pocketbase.io/

https://hackernoon.com/you-probably-dont-need-oauth2openid-connect-heres-why

https://supabase.com/docs/guides/auth

https://selfh.st/apps/

https://dev.to/fultonbrowne/what-is-the-best-open-source-oauth-platform-2ja7

https://quarkus.io/guides/security-oidc-bearer-token-authentication

https://keyauth.cc/

https://spring.io/guides/tutorials/spring-boot-oauth2/

https://js.wiki/

https://cloudinfrastructureservices.co.uk/top-10-best-open-source-mfa-2fa-solutions/

https://opensaas.sh/

https://grpc.io/

https://apisix.apache.org/

https://opensource.com/article/20/3/open-source-multi-factor-authentication

https://nginx.org/en/

https://netbird.io/

https://datatracker.ietf.org/doc/html/rfc6749

https://blog.prateekjain.dev/7-open-source-diagram-as-code-tools-you-should-try-d13d0e972601

https://swagger.io/docs/specification/v3_0/authentication/bearer-authentication/

https://www.youtube.com/watch?v=PjZ37WKXpjk

https://www.metabase.com/

https://kubernetes.io/docs/reference/access-authn-authz/authentication/

https://nextjs.org/docs/pages/guides/authentication

https://cloud.google.com/docs/authentication

https://zitadel.com/blog/why-choose-open-source

https://redis.io/

https://owasp.org/www-project-top-ten/

https://ente.io/

https://openvpn.net/community-resources/how-to/

https://fidoalliance.org/passkeys/

https://open-meteo.com/

https://sourceforge.net/directory/authentication/server-operating-systems/

https://developers.google.com/identity/protocols/oauth2/javascript-implicit-flow

https://firebase.google.com/docs/admin/setup

https://traefik.io/traefik/

https://grafana.com/docs/grafana/latest/setup-grafana/configure-grafana/

https://source.android.com/docs/setup/download

https://winauth.github.io/winauth/download.html

https://www.anthropic.com/news/model-context-protocol

https://www.youtube.com/watch?v=ywQVe9ikcVI

https://openvpn.net/community-downloads/