Open-source Authentication tools

1 SaaS tool · 6 OSS alternatives · 136,173★ combined

Three things to check when comparing authentication tools

License bucket: Permissive, weak-copyleft, strong-copyleft or source-available — the bucket decides whether you can modify, embed or host the project as a service. Each alternatives page groups its projects by bucket; confirm the LICENSE file in the linked repository.
Last push: The last-pushed date on each card comes from the GitHub public API as of the last daily data refresh. Compare it across the projects in a category before reading feature lists.
Migration path: Read the migration tips on each alternatives page, then check the project's own documentation for an importer or export format before planning a cut-over. Pages without migration tips omit that section rather than fill it in.

SaaS tools in this category

Auth0 alternatives

Auth0 (now Okta Customer Identity Cloud) is a managed identity platform providing authentication, authorization, and user management via hosted login flows, social connections, and multi-factor authentication. It is used by apps that want to delegate auth complexity — implementing OIDC, SAML, and social login without building it — with a management dashboard and API for user data.

6 OSS alts · ★ 136,173