







Easier interoperability between these two open protocols is exciting.
A New Social
Today, we're launching the ability to Bounce from Mastodon to any Atmosphere PDS you have access to, whether it be @blackskyweb.xyz, @eurosky.social, @transrights.northsky.social, @selfhosted.social, or even your self-hosted option! You can also bring an invite code when necessary 🎟️ 1/
Apr 29, 2026 at 5:28 PM
I am very excited about AT Protocol
AT Protocol (atproto) is the right mix of useful, practical, personal, and fun. I think it could save the internet.

shreyan - Nostr and ATProto
This post could’ve been titled “Nostr vs ATProto”, but that really isn’t what I wanted to do here. While I will be comparing and contrasting them a lot, and that’s kind of even the point of writing this, I didn’t want to really pit the two against each other at all, and especially not with the title. I also want to try avoiding commenting on the differences between the communities that have formed on the protocols and their apps, although I definitely will be looking at the philosophical differences between the two a lot - also kind of the point of writing this. This also isn’t a super deep technical post, though it assumes familiarity with technical concepts. I also might come back to edit parts of it and add more later.
shreyan - Nostr and ATProto
This post could’ve been titled “Nostr vs ATProto”, but that really isn’t what I wanted to do here. While I will be comparing and contrasting them a lot, and that’s kind of even the point of writing this, I didn’t want to really pit the two against each other at all, and especially not with the title. I also want to try avoiding commenting on the differences between the communities that have formed on the protocols and their apps, although I definitely will be looking at the philosophical differences between the two a lot - also kind of the point of writing this. This also isn’t a super deep technical post, though it assumes familiarity with technical concepts. I also might come back to edit parts of it and add more later.
The Golden Age Of Open Protocols - AVC
Protocols are a geeky topic. It’s way more interesting to talk about applications. People will go on and on about why they like gmail or some other email application. But not a lot of people get excited about SMTP and IMAP which are the underlying email protocols that allow the gmail application to talk to […]
Why ActivityPub is the future
We often tout things like “Mastodon is based on open web protocols” as one of its advantages. I want to elaborate why exactly that’s a good thing.

Dangerous Protocols - Summer of Protocols
Protocols are frequently touted as the liberating alternative to walled technological gardens, but the historical purpose of protocols has always been to simplify decision-making and reduce human agency. How do we reconcile these two narratives? I explore the dangerous side of protocols, and how their ability to drive coordination means they also have

Protocol Reader - Summer of Protocols
The Protocol Reader The Protocol Reader is an 358-page book (currently only available as an epub) comprising 26 foundational essays by 31 authors from the Summer of Protocols program, carefully edited and sequenced to introduce you to the fascinating new discipline of Protocol Studies. It can serve as

Why a New Protocol? The History and Future of AT Protocol - AT Protocol
Bluesky CTO Paul Frazee and Head of Protocol Daniel Holmgren join for a wide-ranging conversation about what atproto is, why it exists, how it got built, and where it's going next. From a Twitter consultancy to an IETF working group, this is where to get started.

Portability and Interoperability
Data portability is friendly to consumers, but it has very little to do with encouraging competition, at least relative to interoperability.
PostgreSQL Extensions or Protocols: Architecture Roulette
Should new infrastructure use PostgreSQL as a query engine, or aim for protocol compatibility instead?

ATPROTO isn’t just for Bluesky weiners
Exploring interoperability & composability for local-first software | grjte
Check out the project at https://github.com/grjte/groundmist-syncCross-posted to https://baincapitalcrypto.com/atproto-for-local-first-interoperability/ This is the third exploration connecting local-first software with the AT Protocol (atproto). Previously, I explored how atproto can enable new fu...
Protocols for Publishers Showcase · Luma
Protocols for Publishers is an event and workshop series that brings together publishers, developers, and researchers to explore open protocols for a…
Another reason why it’s so important that we have open protocols for social media.
Kai Kupferschmidt
One of the issues that has come up again and again in my reporting on misinformation and social media is the massive influence social media companies have on research in the field. Last night a preprint dropped that tries to get at this with some numbers. My piece in @science.org (and 🧪🧵 coming):
I've been thinking about the beauty of open data and how the AT Protocol and wider Atmosphere ecosystem has been recapturing that open data environment that once defined the web. It really does feel special. vale.rocks/posts/atproto-ethos #atproto #ATProtocol
The AT Protocol Harkens An Old Web Ethos
vale.rocksPaul's article prompted a long one from me: What is the purpose of protocols? connectedplaces.online/the-purpose-of-protocols/
The Purpose of Protocols
connectedplaces.onlineP(aul) Frazee
New blogpost about atproto It's not federation, it's not a p2p mesh. It's a secret third thing: practical. pfrazee.com/blog/practical-decentralizati…