Alternatives

Products that do what Authify does

Plug-and-play auth system for developers

1
Authentiq▲157
Strong authentication, without the passwords
2017
2
Stack Auth (YC S24)▲424
Open-source Auth0/Clerk alternative
2024
3
Authy▲177
Dead simple two-factor authentication optimized for devs
2014
4
Autho▲152
cross-platform login box for web and native apps.
2014
5
authzed▲83
The platform to store, compute, and validate app permissions
2021
6
Shieldfy▲139
Smart code security for developers 👩🏼‍💻👨🏿‍💻👨‍🚀
2020
7
GitHired▲360
Find your next 10x Engineer by proof of work, not keywords
Dec 2025
8SA
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
9
Pre-built Auth UI for React▲353
Install Auth UI and start authenticating users with Supabase
2022
10
GPT Auth▲402
Authentication for GPTs on GPT store
2024
11OS
Open-source Auth0 alternative Ory Kratos v0.13 released – nearing v1.0▲88
2023 · github.com
12
StackPatch▲116
Patch authentication into your Next.js app with one command
Jan 2026
13
AuthPass▲75
Simple, open source, cross platform password manager 😅️
2020
14
SuperTokens Passwordless▲173
Fully flexible, open source auth in 15 minutes
2022
15PO
Permify – Open-source authorization service based on Google Zanzibar▲122
2022 · github.com
16
SuperTokens▲146
Open source email & password auth for developers
2020
17TO
Tesseral – Open-Source Auth▲193
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
18
Clerk▲238
More than authentication, complete user management
2022
19
GitHired▲251
Find 100x engineers by proof of work, not resume keywords
May 2026 · githired.tech
20OS
Open-Source Auth for NextJS / React▲107
2021 · ory.dev
21P1
Permify 1.0 – Open-source fine-grained authorization service▲154
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
22
DashboardAuth▲85
User management for Retool, Streamlit & more
2022
23OS
Open-source OAuth2 & OpenID server Ory Hydra v2▲108
2022 · github.com
24KA
Keratin AuthN – Accounts and Auth Microservice in Go▲104
2017 · keratin.tech

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