AI · alternatives · 2026
24 alternatives to FoAz – Use Frontend User Authentication for Backend API Authorization
Fine-grained authorization as a service. RBAC, ABAC, and ReBAC for applications, APIs, and AI agents. Policy as code, a no-code editor, and local PDPs.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. FoAz – Use Frontend User Authentication for Backend API Authorization launched in 2023; newer entries below may have overtaken it.
- 1FE
2023 · foaz.io · its alternatives →
- 2
- 3
Fine-Grained Permissions for AI-Powered Applications
2025 · permit.io · its alternatives →
- 4
Permify was born out of our repeated struggles with authorization. Like any other piece of software, authorization starts small but as things grow scaling it becomes a real pain and begins to hinder product development processes. Ad-hoc authorization systems scattered throughout your app’s codebase are hard to manage, reason about, and iterate on as the company grows. Also you will need to have more specific access controls as things grow. Traditional approaches like RBAC is inefficient for defining granular permissions such as resource-specific, hierarchical, or context-aware permissions.…
2024 · github.com · its alternatives →
- 5
Cloud-native authorization for modern applications and APIs - aserto-dev/topaz
2022 · github.com · its alternatives →
- 6
- 7
- 8
Directus Cloud▲222A modern data stack in 90 seconds, no-code app & data API
2022 · directus.com · its alternatives →
- 9
Hey folks! As Topaz turns a year old, we just released a big update, including support for a new authorization schema language, a built-in visual console, REST APIs for the ReBAC directory, a full test harness, and many other improvements. Would love to get your feedback! Check out the blog post [0] for the complete details (including some cool screenshots), or clone / fork the repo here [1]. Many thanks! [0] https://www.aserto.com/blog/announcing-topaz-030 [1] https://github.com/aserto-dev/topaz
2023 · aserto.com · its alternatives →
- 10
Authorizer▲296Open source authentication and authorization solution
2021 · authorizer.dev · its alternatives →
- 11
Clerk▲280Authentication and user management for React and Next.js
2021 · clerk.com · its alternatives →
- 12
A SDK for access control policies: authorization for the microservice and IoT age. Inspired by AWS IAM policies. Written for Go. - ory/ladon
2017 · github.com · its alternatives →
- 13
The most flexible and granular authorization system yet
2024 · workos.com · its alternatives →
- 14OS
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 →
- 15
One identity layer for your customers, APIs, and agents
Jul 2026 · monocloud.com · its alternatives →
- 16
Pangea AuthZ▲18Next-level access controls that scale with compliance needs
2024 · crowdstrike.com · its alternatives →
- 17
🧑🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC. - Release v1.0.0-beta.9 · logto-io/logto
2022 · github.com · its alternatives →
- 18
The easiest 3rd-party sign-in for your apps and APIs
2020 · its alternatives →
- 19
Flairtable▲92Frontend safe Airtable. Secure and scope your API key.
2020 · flairtable.com · its alternatives →
- 20
- 21
Introducing RBAC for AI-Powered Apps on Postgres/Others
2025 · vela-access.app · its alternatives →
- 22
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 →
- 23
Module for generating a prefixed API Key. Contribute to seamapi/prefixed-api-key development by creating an account on GitHub.
2022 · github.com · its alternatives →
- 24
Also compare
- Front end-Only-Authorization – A new web standard alternatives
- PropelAuth alternatives
- Permit AI Access Control alternatives
- Permify 1.0 – Open-source fine-grained authorization service alternatives
- Topaz: open-source authorization combining the best of OPA and Zanzibar alternatives
- Stack Auth (YC S24) 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 →