Alternatives

Products that do what Open-source Auth0 alternative Ory Kratos v0.13 released – nearing v1.0 does

1. 1OK
   Ory Kratos – Open-source identity server written in Go▲290

   2022 · github.com

2. 2OA
   OSS Auth0 Alternative Ory Kratos Now with Full PassKey Support▲41

   2024 · github.com

3. 3OS
   Open Source Auth0 alternative Ory Identifier First Auth and OTP MFA▲11

   2024 · github.com

4. 4
   Stack Auth (YC S24)▲424

   Open-source Auth0/Clerk alternative

   2024

5. 5OS
   Open-source OAuth2 & OpenID server Ory Hydra v2▲108

   2022 · github.com

6. 6KA
   Keratin AuthN – Accounts and Auth Microservice in Go▲104

   2017 · keratin.tech

7. 7
   Logto Cloud (Preview)▲129

   Comprehensive alternative to Auth0

   2023

8. 8BO
   BoxyHQ – open-source alternative to Auth0/WorkOS▲176

   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

9. 9RN
   React Native template for open source identity provider Ory Kratos▲51

   2020 · getory.io

10. 10
    Hanko▲236

    Open source alternative to Auth0 with superpowers

    2022

11. 11
    AuthKit by WorkOS▲688

    The world's best login box, powered by WorkOS + Radix.

    2023 · authkit.com

12. 12
    erxes XOS v.1▲501

    The open-source Hubspot alternative

    2022

13. 13
    Autho▲152

    cross-platform login box for web and native apps.

    2014

14. 14
    Bubble Passwordless Auth Plugin by SAWO▲274

    Enable passwordless auth and drive conversions on Bubble

    2022

15. 15OS
    Open-source API Key server written in Go by Ory▲35

    Jun 2026 · github.com

16. 16
    Authentiq▲157

    Strong authentication, without the passwords

    2017

17. 17
    Nango Auth▲604

    Free OAuth for 250+ APIs

    2024

18. 18SA
    Stack, an open-source Clerk/Firebase Auth alternative▲144

    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

19. 19OO
    Openkoda – Open–source, private, Salesforce alternative▲318

    2024 · github.com

20. 20HO
    Hydra – Open-Source OAuth2 Server▲190

    2019 · gethydra.sh

21. 21
    ZITADEL▲82

    Integrate user management and authentication easy as pie

    2022

22. 22
    Authy▲177

    Dead simple two-factor authentication optimized for devs

    2014

23. 23OS
    Open Source Authentication and Authorization▲128

    I’m Rishabh and the co-founder and CTO at https://supertokens.com (YC S20). We offer open-source user authentication and we just released our user roles product for companies implementing authorization. Our users are web developers, and a prominent and adjacent pain point for our users is authorization. Developers typically implement two independent solutions for authentication and authorization. Offering AuthN and AuthZ in a single solution is something we’ve been thinking about for the last few years. Quick primer, authentication is knowing who the user is, and authorization is…

    2022

24. 24
    Authorizer▲296

    Open source authentication and authorization solution

    2021

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