Life & fun · alternatives · 2026

Emauth.io is a free service that provides passwordless login links similar to Slack's authentication approach. Users receive login links via email instead of managing traditional passwords, simplifying the… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Emauth.io – Free service for Slack-style passwordless login links launched in 2020; newer entries below may have overtaken it.

1. 1
   SuperTokens Passwordless▲173

   Fully flexible, open source auth in 15 minutes

   2022 · supertokens.com · its alternatives →

2. 2
   MojoAuth▲263

   Simple & Easy passwordless authentication for website & apps

   2021 · mojoauth.com · its alternatives →

3. 3
   Sign in with Slack▲467

   Let users login to your site with Slack

   2016 · docs.slack.dev · its alternatives →

4. 4
   Magic Link Auth (by WorkOS)▲164

   Fastest way to add passwordless login to your app for free

   2020 · workos.com · its alternatives →

5. 5
   MojoAuth 2.0▲263

   Easiest way to add passwordless login to your apps & website

   2022 · mojoauth.com · its alternatives →

6. 6
   Telegram Login Widget▲417

   Official Telegram authentication for websites 🚀

   2018 · telegram.org · its alternatives →

7. 7OI
   OAuth.io released with 70+ providers▲66

   2013 · oauth.io · its alternatives →

8. 8
   Gazepass▲313

   Passwordless login API for web and mobile apps

   2020 · gazepass.com · its alternatives →

9. 9
   Vault Vision for Webflow▲452

   No-code passwordless user logins and auth for Webflow sites

   2023 · vaultvision.com · its alternatives →

10. 10
    Copper▲818

    Password-free signups. No social network required.

    2016 · its alternatives →

11. 11
    Passage by 1Password▲236

    Frictionless security: auth & user management with passkeys

    2023 · 1password.com · its alternatives →

12. 12
    MojoAuth 3.0 AI▲266

    Enhance existing authentication or setup a new login page

    2023 · mojoauth.com · its alternatives →

13. 13
    Intro▲369

    LinkedIn for Slack

    2016 · its alternatives →

14. 14
    Bubble Passwordless Auth Plugin by SAWO▲274

    Enable passwordless auth and drive conversions on Bubble

    2022 · its alternatives →

15. 15
    Stack Auth (YC S24)▲424

    Open-source Auth0/Clerk alternative

    2024 · hexclave.com · its alternatives →

16. 16
    a Demo of the WebAuthn Specification▲15

    Demonstration of the WebAuthn specification.

    2023 · webauthn.io · its alternatives →

17. 17
    PlusIdentity▲184

    Password manager on Slack, built for teams

    2022 · plusidentity.com · its alternatives →

18. 18SO
    Serverless OAuth on a Github page▲37

    2013 · oauth-io.github.io · its alternatives →

19. 19
    Octauthent▲129

    Add a login form to any website, without a line of code

    2021 · octauthent.com · its alternatives →

20. 20
    Byepass▲234

    Passwordless login

    2018 · its alternatives →

21. 21
    Autho▲152

    cross-platform login box for web and native apps.

    2014 · auth0.com · its alternatives →

22. 22
    Simple OTP▲104

    Simple passwordless authentication for your website

    2023 · its alternatives →

23. 23
    Passkeys▲107

    Passwordless login

    2023 · developers.google.com · its alternatives →

24. 24
    saltify.io▲164

    A simple, secure and free to use tool for sharing secrets

    2017 · saltify.io · its alternatives →

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 →