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OpenSourceAlternatives

Tag

authentication

18 catalogue entries use this topic; each Project's license policy is labeled separately.

PocketBase

PocketBaseOpen

Open source backend in one file with realtime database and auth

Stars61.4K
Commitjust now
LicenseMIT

PocketBase is an open source backend with an embedded SQLite database, realtime subscriptions, auth, file storage, and an admin dashboard in one executable.

Appwrite

AppwriteAIOpen

Open source backend with auth, databases, and functions

Stars57.5K
Commitjust now
LicenseBSD-3-Clause

Appwrite is an open source backend platform with auth, databases, storage, functions, and messaging for web and mobile apps.

Alternative toFirebaseSupabase
Keycloak

KeycloakOpen

Open-source identity and access management with single sign-on

Stars37.3K
Commitjust now
LicenseApache-2.0

Keycloak is open-source identity and access management software that adds login, single sign-on, and access control to apps and services on your own infrastructure.

Alternative toAuthentik
Better Auth

Better AuthOpen

TypeScript auth library that runs inside your app

Stars30.2K
Commitjust now
LicenseMIT

Better Auth is a TypeScript authentication library that runs inside your own application instead of as an external service. User rows live in your own database behind Drizzle, Prisma, or Kysely adapters, so there is no monthly-active-user meter and no third-party service in the request path.

Alternative toAuth0
Authentik

AuthentikOpen

Self-hosted open-source identity provider for modern SSO

Stars25.8K
Commitjust now
LicenseMIT

Authentik is a self-hosted, open-source identity provider that adds single sign-on to web apps and services over SAML, OAuth2/OIDC, LDAP, and RADIUS.

Alternative toOktaAuth0
Apache APISIX

Apache APISIXOpen

Open-source API gateway for routing, security, and AI traffic

Stars17.2K
Commitjust now
LicenseApache-2.0

Apache APISIX is a self-hosted, open-source API gateway that routes traffic to upstream services with authentication, rate limiting, and observability.

Alternative toOktaAuth0
SuperTokens

SuperTokensOpen

Open-source user authentication with self-hosting and managed cloud

Stars15.3K
Commitjust now
LicenseApache-2.0

SuperTokens is open-source user authentication with session management, passwordless and social login, and SSO, available self-hosted or as a managed service.

Alternative toAuth0
Zitadel

ZitadelOpen

Open-source identity infrastructure with login and single sign-on

Stars15.3K
Commitjust now
LicenseAGPL-3.0

Zitadel is open-source identity infrastructure that adds login, single sign-on, and multi-factor authentication to applications, with multi-tenant organization management, available self-hosted or as a managed cloud.

Alternative toKeycloak
Logto

LogtoOpen

Open-source identity platform with auth, SSO, and multi-tenancy

Stars14.7K
Commitjust now
LicenseMPL-2.0

Logto is an open-source identity platform for sign-in, single sign-on, and organization management, available self-hosted or as Logto Cloud.

Ory

OryOpen

Open-source identity platform for login, SSO, and permissions

Stars13.9K
Commit1mo ago
LicenseApache-2.0

Ory is an open-source identity platform built around the Kratos server, offering passkeys, social sign-in, and single sign-on self-hosted or as the managed Ory Network.

Tyk

TykOpen

Open-source API and AI gateway with dashboard and cloud

Stars10.9K
Commitjust now
LicenseMPL-2.0

Tyk is an open-source API and AI gateway enforcing authentication, rate limits and analytics across REST, GraphQL, gRPC and MCP services. Teams self-host it with Docker or Kubernetes, or use the managed Tyk Cloud.

Alternative toKrakenD
Hanko

Hanko

Passkeys, SSO, and MFA without vendor lock-in

Stars9,019
Commit18h ago
LicenseUnknown

Hanko is an authentication service built passkey-first rather than passkey-eventually. Passwords are optional from the start, and the hosted components handle the awkward parts of the WebAuthn ceremony that teams usually get wrong.

Alternative toAuth0
Hexclave

Hexclave

Open-source user infrastructure for auth, payments, emails, and analytics

Stars6,861
Commitjust now
LicenseMIT / AGPL-3.0

Hexclave is an open-source user-infrastructure platform for authentication, teams, payments, emails, and analytics, available as managed cloud or free self-hosting.

Unkey

UnkeyOpen

Open source API key management with auth and rate limiting

Stars5,462
Commitjust now
LicenseAGPL-3.0

Unkey is an open source developer platform for issuing, verifying, and revoking API keys with authentication, rate limiting, and usage-based billing.

Alternative toKeycloak
KrakenD

KrakenDOpen

Stateless open-source API gateway for aggregation and traffic control

Stars2,690
Commitjust now
LicenseApache-2.0

KrakenD is a stateless, open-source API gateway written in Go that merges multiple backend calls into single endpoints with authentication, rate limiting, and observability.

Authgear

AuthgearOpen

Open source auth with SSO, passkeys, and user management

Stars2,091
Commitjust now
LicenseApache-2.0

Authgear is an open source identity platform with login flows, single sign-on, multi-factor authentication, and user management for web and mobile apps.

Alternative toOktaAuth0
WunderGraph

WunderGraphOpen

Open-source GraphQL federation platform and API gateway

Stars1,275
Commitjust now
LicenseApache-2.0

WunderGraph Cosmo is an open-source platform for GraphQL federation that composes REST and GraphQL services into one unified gateway API.

Alternative toKrakenD
Auth0

Auth0

Hosted identity covering login, SSO, and multi-factor

CompanyOkta
Since2013
PricingFreemium

Auth0 made outsourcing authentication respectable. Social providers, enterprise SSO, multi-factor, and the awkward edges of OAuth arrive already handled, with rules and actions for the parts that are specific to your product.