Authelia is an open-source authentication/authorization server with 2FA/SSO

• authelia

  174 19,523 9.9 Go

  The Single Sign-On Multi-Factor portal for web apps

  

• Keycloak

  229 19,857 10.0 Java

  Open Source Identity and Access Management For Modern Applications and Services

  

Looks like Keycloak's certificate is only valid with `www.`: https://www.keycloak.org/

> - Keycloak (you won't get fired for picking this)[0]

Curious what you mean with "you won't get fired for picking this". Do you mean that it's good and easy to run, or something else?

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• Doorkeeper

  6 5,255 7.5 Ruby

  Doorkeeper is an OAuth 2 provider for Ruby on Rails / Grape.

  

One thing that is missing from this list is open source language specific libraries. Projects such as https://oauthlib.readthedocs.io/en/latest/oauth2/server.html and https://github.com/doorkeeper-gem/doorkeeper

Depending on your use case, for example if you only have one application, you might be better off running something embedded in your app, or independent but using the same runtime/deployment environment. Then, when you are ready to add another app or integration, you should be able to introduce a standalone auth system more easily if appropriate (because all your auth interactions should be relatively standardized). I'm a big fan of standalone auth systems as a way to simplify access control and give a single view of a user/customer, but you can also succeed using open source embedded libraries.

When the moment comes to introduce a standalone system, you should consider a few dimensions (this list pulled from a previous comment of mine: https://news.ycombinator.com/item?id=26360048 ):

   * open source or not

• fusionauth-issues

  22 88 7.0

  FusionAuth issue submission project

  

These dimensions all matter to varying degrees depending on your team and needs.

Disclosure: I work for https://fusionauth.io/ which has open source supporting libraries and docs, but which is itself not open source.

• glewlwyd

  2 425 8.9 C

  Experimental Single Sign On server, OAuth2, Openid Connect, multiple factor authentication with, HOTP/TOTP, FIDO2, TLS Certificates, etc. extensible via plugins

I tried several of these recently and I ended up with glewlwyd:

https://github.com/babelouest/glewlwyd

• oauth2-proxy

  98 8,674 9.0 Go

  A reverse proxy that provides authentication with Google, Azure, OpenID Connect and many more identity providers.

  

oauth2_proxy is a great tool that lets you create a transparent OAuth proxy to provide SSO for any internal service. https://github.com/oauth2-proxy/oauth2-proxy

There's also S.S.Octopus, and Pomerium. https://github.com/buzzfeed/sso https://github.com/pomerium/pomerium

They all have different OAuth providers, so check them each out to see which one works with your identity provider.

• KrakenD

  4 6,053 8.4 Go

  Ultra performant API Gateway with middlewares. A project hosted at The Linux Foundation

  

Thanks for the pointer to Express API Gateway.

A took a look at Krakend a while back, and it didn't seem to support it either [1]

[1] https://github.com/devopsfaith/krakend/issues/274

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

Suggest a related project