IndieAuth is a decentralized identity protocol built on top of OAuth 2.0.
IndieAuth
IndieAuth is a federated login protocol for Web sign-in, enabling users to use their own domain to sign in to other sites and services. IndieAuth can be used to implement OAuth2 login AKA OAuth-based login.
Indie social sign-in could go mainstream — Open Indie
Back in June I wrote about an exciting confluence of digital auth tech: ### Social sign-in for indies The focal point of Weird Net...
AT Protocol, OAuth, and well, decentralization
I've been very happy with how Bluesky and AT Protocol as a whole is going, except for one thing: OAuth.
OAuth Roadmap · bluesky-social atproto · Discussion #2656
OAuth is nigh! Protocol support has been a long time coming and we are pumped. It should greatly improve the user and developer experiences building secure apps and integrations on atproto. And cou...
OAuth API - Home
The Apigee OAuth API gives you a keychain for authenticating to Twitter, Salesforce, Salesforce Chatter, Facebook, Flickr, and Foursquare. Thousands of developers complain about the complexity of using OAuth. Now you can easily authenticate in one consistent way across several APIs and build apps faster.
What is OAuth?
Wherein I [try to] answer a seemingly straightforward question: "WTF is OAuth, anyhow?"
Building AIP: An ATProtocol Authorization Gateway - Nick's Blog
OAuth is the first challenge developers face in the atmosphere. This post is about AIP, the authorization gateway we built at Graze Social to alleviate some of the pain.
OAuth 2 in Action
Master OAuth 2! Securely build clients, authorization servers, and resource servers with this practical guide.
Building OAuth Authentication for Bluesky: A Complete Guide for Web and iOS Apps - Lost in Inference
How to implement secure, standards-compliant OAuth 2.1 + PKCE authentication for AT Protocol apps with separate web and mobile flows
Proposal: OAuth-based account creation · bluesky-social atproto · Discussion #4587
We recently added to the reference PDS (and underlying OAuth Provider) implementation support for Initiating User Registration via OpenID Connect 1.0, however, what I wasn't aware of when I add...
Proposal: OAuth Scopes · bluesky-social atproto · Discussion #3655
Note: a more complete proposal was published in July 2025: https://github.com/bluesky-social/proposals/tree/main/0011-auth-scopes We’re continuing work on rolling OAuth out to the atproto network. ...
OAuth Improvements - AT Protocol
We've been making improvements to the end-user and developer experiences with atproto OAuth.
Cross-App Authentication on AT Protocol: How Roomy and OpenMeet Share Identity
The free, open-source alternative to Meetup. Create groups and events for your community — no fees, no ads, community-owned forever.
this would be my answer too, atproto oauth is unironically extremely based
hailey
i guess in a way this is the most widely used one, but also one that is severely underused in other ways. definitely identity. i've long been of the opinion that there are obviously cool things that come from public data and all the public pieces of the proto, but identity is higher impact.
