Open Source Everything

Login & identity

Let users sign in securely.

9open alternatives 7do the whole job
Replaces

Open alternatives9

Open-source apps that replace Auth0 and Okta

No screenshot yet
38kActiveApache-2.0Runs on your own server

Keycloak is a free server that handles user sign-in and access control, so apps don't have to store passwords or check logins themselves. It is aimed at developers and organizations that run their own applications and services.

Runs on your own server · GitHub
No screenshot yet
15kActiveWindows · Mac · LinuxAGPL-3.0Runs on your own server

ZITADEL is a login and access system that lets apps and companies manage who can sign in and what they can do. It is aimed at developers and IT teams who want to run their own identity service or use a hosted one.

Runs on your own server · GitHub
SuperTokens screenshot
15kActiveApache-2.0Open coreRuns on your own server

SuperTokens is a self-hosted service that handles user sign-up, login and session management for apps. It is aimed at developers who want to add login to their own applications while keeping control of user data.

Runs on your own server · GitHub
Logto screenshot
15kActiveIn your browserMPL-2.0For developers

Logto is an open-source system that handles user sign-in and login security for websites and apps. It is aimed at developers and companies that need to add accounts, single sign-on, and access control to their products.

For developers · GitHub
No screenshot yet
9kActiveWindows · Mac · LinuxAGPL-3.0For developers

Hanko is a login and user account system that developers add to their websites and apps, supporting passkeys, passwords, email codes and single sign-on. It can be run on your own server or used as a hosted service.

For developers · GitHub
Authgear screenshot
2.1kActiveLinuxApache-2.0Runs on your own server

Authgear is a login and sign-up system that websites and apps can use so their users can sign in securely with passwords, passkeys, codes or social accounts. It is aimed at developers building consumer-facing products who want to add authentication without building it themselves.

Runs on your own server · GitHub
No screenshot yet
654ActiveMac · LinuxApache-2.0Runs on your own server

Janssen is a set of open-source tools for managing digital identity and controlling who can access applications and services. It is aimed at companies and organizations that run their own login and access systems.

Runs on your own server · GitHub
No screenshot yet
14kActiveWindows · Mac · LinuxApache-2.0Open coreReplaces partlyRuns on your own server

Ory Kratos is a server that handles user login, sign-up, password recovery and profile management so that apps do not have to build these themselves. It is aimed at developers and companies who run their own apps and need user accounts.

Runs on your own server · GitHub
No screenshot yet
2.3kActiveApache-2.0Replaces partlyRuns on your own server

Ory Polis is a self-hosted service that lets companies sign users into apps using their corporate single sign-on systems, and keeps user accounts synced with company directories. It is aimed at developers and IT teams who build or run enterprise logins.

Runs on your own server · GitHub

What's missing

What people still miss here, and wish existed. Upvote what matters to you.

Before you build

Planning something for login & identity? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:

Read the list of open-source alternatives at https://opensourceeverything.org/data/groups/login-identity.json. Compare it with my project or idea below. Tell me which projects overlap, what I could reuse instead of rewriting, and what mine does that none of them do. My project or idea:
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Fix the list itself

A project or closed app missing from this list, or a mistake on it? These open a short form on GitHub, and a mod reviews it. To say what a project can't do, use What's missing.

About this page

Replaces fully means it does the main job of these apps; Replaces partly means it covers some of it.

Licenses: every project here uses an open-source license (what each one means). Open core means some parts are paid or under another license.

GitHub stars are shown for reference. They measure popularity, not whether it replaces anything.

Verified means r/TrueOpenSource mods checked it: open-source license, maintained, and it really does the job.

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