Comment by verdverm 3 days ago
The App View frontend is open source: https://github.com/bluesky-social/social-app
Much of the backend is open source as well: https://github.com/bluesky-social/atproto/tree/main/packages
What is not are the extra services they run to provide a better and faster UX. Even if it was open source, it likely costs 10s of thousands to run per month (they have moved largely to "onprem" hardware instead of the cloud aiui)
the backend (the AppView) can be found here:
https://github.com/bluesky-social/atproto/tree/main/packages...
there are various supporting services written in Go as well
AppView is a specific term of art within the Bluesky federation architecture: https://atproto.com/guides/glossary#app-view, you were incorrect in identifying the public frontend repo as the AppView.
App View is a bit fuzzy of a term. To me it seems like a combination of frontend, backend, custom lexicon, and supporting services. There isn't really another place in the spec or design where clients or browsers fit in, which do in fact provide a view of the network via an app.
"UI" is part of the definition they give in the glossary
That's the frontend code, it doesn't include the backend API services, which are closed source.