Dev tools · alternatives · 2026
24 alternatives to FusionAuth
Auth for any app. Get every feature. Deploy everywhere.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. FusionAuth launched in 2018; newer entries below may have overtaken it.
- 1
One identity layer for your customers, APIs, and agents
Jul 2026 · monocloud.com · its alternatives →
- 2
Discover and enable identity integrations in minutes
2020 · marketplace.auth0.com · its alternatives →
- 3
Free OSS auth without 3rd party services, deploy anywhere
2023 · wasp.sh · its alternatives →
- 4
- 5
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 →
- 6
- 7
MojoAuth 3.0 AI▲266Enhance existing authentication or setup a new login page
2023 · mojoauth.com · its alternatives →
- 8OI
2013 · oauth.io · its alternatives →
- 9
Hi folks! I'm Ulysse, and Tesseral (https://github.com/tesseral-labs/tesseral) is open-source auth for B2B SaaS. Early in my career, I worked on enterprise auth and security features at Segment. I've been obsessed with the subtle details of enterprise software ever since. For example, I wrote an implementation of SAML in the early days of the COVID pandemic because I thought it was fun. Over the years, I've felt frustrated that too few people have seemed interested in making auth obvious for developers of business software. Auth really doesn't need to be so confusing. We…
2025 · github.com · its alternatives →
- 10
MojoAuth 2.0▲263Easiest way to add passwordless login to your apps & website
2022 · mojoauth.com · its alternatives →
- 11
- 12
- 13
SimpleID▲150Add decentralized auth and storage to your app in 10 minutes
2019 · simpleid.xyz · its alternatives →
- 14
The easiest 3rd-party sign-in for your apps and APIs
2020 · its alternatives →
- 15
- 16
Directus Cloud▲222A modern data stack in 90 seconds, no-code app & data API
2022 · directus.com · its alternatives →
- 17
Add open source login to any Next.js and React single page app (SPA) using free open source.
2021 · ory.dev · its alternatives →
- 18
Build enterprise-ready auth into your B2B app
2023 · stytch.com · its alternatives →
- 19OS
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 · its alternatives →
- 20
Integrate enterprise-level SSO for free in <1 hour
2020 · workos.com · its alternatives →
- 21
- 22
- 23
- 24
An open-source authorization as a service inspired by Google Zanzibar, designed to build and manage fine-grained and scalable authorization systems for any application. — Permify is now part of FusionAuth 🎉 - Permify/permify
2022 · 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 →