Developers building with ATProto (the protocol powering Bluesky) have been asking how they can use XMTP to power messaging between users in their apps. It’s possible today to add secure messaging to any Bluesky app, and to add Bluesky identity to any messenger built on XMTP. 0:00 /0:
What I Wish Someone Had Told Me About AT Protocol and Bluesky - Stuff Rob Wrote
I've been interested in atproto (the protocol that Bluesky, Blacksky, and many other applications - including pckt, where this blog is hosted! - run on) for abo...
ATproto: The Enshittification Killswitch That Enables Resonant Computing
Disclosure: I’m on the board of Bluesky, which was inspired by my “Protocols, Not Platforms” paper. But this post isn’t about Bluesky the app. It’s about the underlyin…
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.
Be Wary of Bluesky
Bluesky promises decentralization, but nearly every user's data sits on Bluesky's servers, and every new ATProto app reinforces that centralization. T
ATSMS — end-to-end encrypted group messaging
Encrypted group messaging on AT Protocol identities, with no server ordering anything.
Introduction to AT Protocol
Walkthrough of the various parts and concepts in Bluesky's AT Protocol (ATProto), the types of servers involved and how it all fits together
proto instant messenger
AIM-inspired group chat on the AT Protocol. Real-time chat rooms, presence, away messages — a safe space for community.
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.
boards · private message boards on AT Proto
Invite-only message boards on Bluesky's AT Protocol. Posts live in each member's own PDS, readable only by the board's members and never on the public firehose.
freeq — IRC with identity
IRC server with AT Protocol (Bluesky) identity authentication. Connect with any IRC client, authenticate with your Bluesky account.
Hangar – Native Bluesky Client for Linux
Hangar is your Bluesky home base. Built natively for Linux with GTK4 and Libadwaita.
proto IM | AIM-inspired video chat for the open web
Free video calls and buddy lists built on the AT Protocol. Like FaceTime, but it works on every device. Works with Blacksky, Bluesky, or any atproto account.
Anisota for Bluesky & ATProto
A radical yet peaceful user interface for using Bluesky, ATProto, and other ATmosphere-based social media more intentionally.
Anisota for Bluesky & ATProto
A radical yet peaceful user interface for using Bluesky, ATProto, and other ATmosphere-based social media more intentionally.
In 2026, @bsky.app is focused on what’s next for open social: bringing together users for conversations around live events, creator and platform monetization, and private state, giving users truly private data while preserving ownership and portability at the protocol level.
