nowfound

Dev tools · alternatives · 2026

24 alternatives to An open source OAuth/auth system

Can be deployed to Cloudflare or fully selfhosting. A simple demo site available with only Password Sign-in/Sign-up, OTP MFA, Passkey enrollment features enabled, no real email needed: https://auth-demo.valuemelody.com/

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    Open-source Auth0/Clerk alternative

    2024 · hexclave.com · its alternatives →

  2. 2

    Free OAuth for 250+ APIs

    2024 · nango.dev · its alternatives →

  3. 3

    Hey HN! Happy to finally launch Stack. We made it because we like to put apps into production quickly, and authentication & user management was taking up way too much time. We have components like and that automatically adapt to whatever theme & design system you're using. Check the blog post to see the example with Radix UI and Joy UI. Also, there's an admin dashboard for monitoring and editing accounts. Stack is 100% AGPL/MIT-licensed, so you can self-host it. Cheers!

    2024 · stack-auth.com · its alternatives →

  4. 4

    Open source email & password auth for developers

    2020 · supertokens.com · its alternatives →

  5. 5
    Authentiq▲157

    Strong authentication, without the passwords

    2017 · its alternatives →

  6. 6HO

    Ory Hydra is the open-source, OpenID Certified® OAuth 2.0 server and OpenID Connect provider. Cloud-native, API-first, and built for scale.

    2019 · gethydra.sh · its alternatives →

  7. 7
    MojoAuth▲263

    Simple & Easy passwordless authentication for website & apps

    2021 · mojoauth.com · its alternatives →

  8. 8

    Hi HN, we are Deepak and Sama, co-founders of BoxyHQ (https://boxyhq.com/). BoxyHQ provides an open-source platform for developers to quickly integrate enterprise features into their software solutions. These include SAML Single Sign-On (SSO), Audit logs, with more to come :) Every B2B startup faces a common challenge when it comes to selling into the Enterprise; they need to allocate time and resources to support all the requirements to make their offering enterprise-grade. Supporting these requirements is a significant undertaking for the engineering team, especially since…

    2022 · boxyhq.com · its alternatives →

  9. 9

    Simple passwordless authentication for your website

    2023 · its alternatives →

  10. 10

    Simple and opinionated OpenID Connect server designed for self-hosters - lastlogin-net/obligator

    2023 · github.com · its alternatives →

  11. 11

    Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, Social Sign In, OIDC, Magic Link, Multi-Factor Auth, SMS, SAML, TOTP, and more. Runs everywhere, runs best on Ory Network.

    2023 · github.com · its alternatives →

  12. 12

    The 2FA app you actually enjoy using

    Jul 2026 · authmonster.app · its alternatives →

  13. 13
    Hanko▲236

    Open source alternative to Auth0 with superpowers

    2022 · hanko.io · its alternatives →

  14. 14

    Passwordless, source-code-included auth for your website

    2024 · its alternatives →

  15. 15

    Fully flexible, open source auth in 15 minutes

    2022 · supertokens.com · its alternatives →

  16. 16
    NoPass.me▲129

    Open-source identity verification

    2021 · nopass.me · its alternatives →

  17. 17
    Autho▲152

    cross-platform login box for web and native apps.

    2014 · auth0.com · its alternatives →

  18. 18

    Add open source login to any Next.js and React single page app (SPA) using free open source.

    2021 · ory.dev · its alternatives →

  19. 19

    Simple, open source, cross platform password manager 😅️

    2020 · authpass.app · its alternatives →

  20. 20EI
  21. 21

    Comprehensive alternative to Auth0

    2023 · logto.io · its alternatives →

  22. 22

    Fastest way to add passwordless login to your app for free

    2020 · workos.com · its alternatives →

  23. 23

    Internet-scale OpenID Certified™ OpenID Connect and OAuth2.1 provider that integrates with your user management through headless APIs. Solve OIDC/OAuth2 user cases over night. Consume as a service on Ory Network or self-host. Trusted by OpenAI and many others for scale and security. Written in Go. -

    2022 · github.com · its alternatives →

  24. 24
    Liquid▲119

    Seamless and customizable auth and user management

    2024 · github.com · its alternatives →

Also compare

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →