







Bluesky's backend was made to be more than a social network
Beyond Bluesky: These are the apps building social experiences on the AT Protocol | TechCrunch
A list of AT Protocol-based, consumer-facing apps that are either built on top of Bluesky or its underlying protocol, allowing users to take back control over their social networking experiences and personal data.

Bluesky Is an App. The AT Protocol Is the Internet Beneath It. - Ewan’s Blog
There is a confusion that keeps recurring, and it is understandable enough that it is worth addressing directly.
Bluesky Is an App. The AT Protocol Is the Internet Beneath It. - Ewan’s Blog
There is a confusion that keeps recurring, and it is understandable enough that it is worth addressing directly.
AT Protocol
The AT Protocol is a protocol and set of open standards for decentralized publishing and distribution of self-authenticating data within the social web. It serves as the technical foundation of the Bluesky social network, originally developed as a reference implementation for the protocol, as well as an ecosystem of interoperable social applications and services collectively referred to as the ATmosphere.
Why isn't Bluesky a peer-to-peer network?
Today in "our novel form of NIH," why did Bluesky choose not to use a peer-to-peer network when designing the AT Protocol?

Why isn't Bluesky a peer-to-peer network?
Today in "our novel form of NIH," why did Bluesky choose not to use a peer-to-peer network when designing the AT Protocol?

Starting from scale in the design of the AT Protocol - Paul's Leaflets
Bluesky was founded in 2022 to produce a protocol which Twitter could adopt. The product goals changed, but the requirements didn't.
Bryan Newbold: Protocol engineering
A protocol engineer at the social-media platform Bluesky describes building an open protocol around a fast-growing social media platform.

Benefits of an open network
While Bluesky looks like other social apps, it’s actually quite different. It’s an open network.
Appendix:Xanadu - AT Protocol Paper Errata and Details
A description of known problems in Bluesky PBC's paper, "Bluesky and the AT Protocol: Usable Decentralized Social Media", as well as notes on terminology changes and how Bluesky's implementation differs from that described in the paper.
BlueSky - The Future of Social Media
Watch BlueSky's user base grow in real-time. Innovative, decentralized social networking is here!

ATPROTO isn’t just for Bluesky weiners

Bluesky Protocol Services
High scale open social, unlocked for every builder. Bluesky operates public infrastructure for the AT Protocol — Jetstream, Relay, and the Bluesky API — as open services anyone can build on.

How It Works | Bluesky Protocol Services
From one post to the whole network — how records, Lexicons, and the firehose fit together on the AT Protocol.
