Tagging @j12t@j12t.social as this might be something worth discussing in relation to activitypub.rocks

What other AP frameworks do you know of?

This one is used in Mitra and all my other projects: https://docs.rs/apx_sdk/latest/apx_sdk/

There are many libraries, actually - the Delightful List has already been mentioned in this thread. But most of these libraries are not actively developed, or not used in any serious project.

So I've been thinking of adding a curated list of libraries to the ActivityPub developer guide.

@silverpill@mitra.social this is very cool, I didn't know about it!

I've written an ActivityStreams 2.0 vocabulary library in Rust: https://docs.rs/activitystreams-vocabulary/latest/activitystreams_vocabulary/

Don't know of any external users for it yet, though. I mainly built it for use in my other projects, would love feedback from anyone that is using it.

Nice. I'm going to keep an eye on it.

I'd add in projects like Emissary, Bonfire, or https://github.com/evanp/activitypub-bot . They can all be used to build Fediverse servers from building blocks.

I think other parts might be more piecemeal. I thing HTTP Signature libraries are awesome. https://github.com/social-web-foundation/activitystrea.ms is an AS2 library that I've used a lot, even though it's weird.

https://github.com/social-web-foundation/ap-components is a Web Components library for ActivityPub objects. Also kind of cool!

I think a lot of of building a Fediverse server -- or client! -- is implementing behaviour, which an engine like Fedify can do, but most libraries aren't going to do for you.

@julian@activitypub.space @hongminhee @mariusor

there was a brief discussion about this in the fedify matrix channel a bit ago.

https://dev.funkwhale.audio/funkwhale/pyfed (though not sure how active development is for this)

https://codeberg.org/bovine/bovine/ (also looks dead)

and @julian@fietkau.social is building a library for SciOp (https://blog.sciop.net/2025-12-08/sfn-and-federation#federation-plans)

@tom @julian@activitypub.space The SciOp implementation and its AP plumbing are led by @jonny, that'll probably stay that way even with me now on board as well. I trust the direction, but I wouldn't count on a plug & play framework release within a plannable timeframe.

There have been other Python ActivityPub frameworks and libraries, from the top of my head I know https://git.fabiomanganiello.com/blacklight/pubby by @fabio and https://github.com/fedi-libs/apkit by @cocoa. See also https://delightful.coding.social/delightful-fediverse-development/ curated by @smallcircles.

@julian@fietkau.social
@tom @julian@activitypub.space
It'll be a bit, yeah, and ours is going to be a bit opinionated, I want to push for portable IDs throughout - it fits for our application and its how AP should work.

@julian@fietkau.social ah, of course @smallcircles@social.coop has a list for it. That's quite handy, thanks both!

@julian for the implementors of Go ActivityPub applications that need RFC9421 signatures, it's important to note that it's not FedBOX that provides the functionality, but two modules in the GoActivityPub library:

* the **client** module[1] wraps the signing of activities.
* the **auth** module[2] wraps the verification functionality.

Also for lower level use, there's the underlying module being wrapped by GoActivityPub: dadrus/httpsig [3]

[1] https://github.com/go-ap/client
[2] https://github.com/go-ap/auth
[3] https://github.com/dadrus/httpsig

Fed@hongminhee@hollo.social

@mariusor@metalhead.club makes sense. It seems like even for some frameworks, depending on libraries for trickier bits is a better idea in the long run.