Authentication

285+ open-source auth tools — OAuth, SSO, passkeys, MFA, and session management. Alternatives to Auth0, Clerk, and Firebase Auth.

acopw-go

Small cryptographically secure password generator package for Go

Authentication
password-generatorgolibrary
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FusionAuth

Security-centric authentication as a Service, including self-hosting

Authentication
ssomfaoauth
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Permit.io

Permissions and access-control as a service. [](https://launchweek.dev)

Authentication
authorizationrbacabac
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SSOJet

Enterprise SSO without rebuilding auth. The free plan includes unlimited monthly active users, unlimited organizations, 2 SSO & 2 SCIM connections

Authentication
samlssomanaged
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CertMagic

Mature, robust, and powerful ACME client integration for fully-managed TLS certificate issuance and renewal

Authentication
goacmeletsencrypt
Visit → 5480★
Stytch

All-in-one authentication, authorization, and fraud prevention infrastructure. [](https://launchweek.dev)

Authentication
passwordlesspasswordsoauth
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Oso

Authorization framework (RBAC)

Authentication
authorizationlibrarypolicy
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debris/tiny-keccak

Keccak family (SHA3)

Developer Tools
rustkeccakhash
Visit → 203★
Titan

Streamline role-based access control, enforce security policies, and ensure compliance for your Snowflake data warehouse

Authentication
self-hostednotificationswebhooks
Visit → 480★
Passbolt

Open-source password manager built for teams.

Authentication
password-managerteamopen-source
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Socket

Detect and block open-source supply chain attacks

Authentication
supply-chainnpmpypi
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dkvdm/onepassword-mcp-server

An MCP server that enables secure credential retrieval from 1Password to be used by Agentic AI

MCP Servers
mcp1passwordsecrets
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