### [Fedify]
[Fedify] (Fedify: ActivityPub server framework (npub1tlf…wz08)) is a #TypeScript library for building federated server applications powered by ActivityPub and other #fediverse standards. It provides [type-safe objects for Activity Vocabulary][1], WebFinger client/server, HTTP Signatures, and more—eliminating boilerplate code so you can focus on your application logic.
[Fedify]: https://fedify.dev/
[1]: https://fedify.dev/manual/vocab
### [Hollo]
[Hollo] (Hollo
(npub1mz3…tpw7)) is a single-user microblogging server powered by Fedify. While designed for individual users, it's fully federated through ActivityPub, allowing interaction with users across the fediverse. #Hollo implements Mastodon-compatible APIs, making it [compatible with most Mastodon clients][2] without needing its own web interface.Hollo also serves as our testing ground for bleeding-edge Fedify features before they're officially released.
[Hollo]: https://docs.hollo.social/
[2]: https://docs.hollo.social/clients/
### [BotKit]
[BotKit] (BotKit by Fedify
(npub1sql…0z0c)) is our newest family member—a framework specifically designed for creating ActivityPub bots. Unlike traditional Mastodon bots, #BotKit creates standalone ActivityPub servers that aren't constrained by platform-specific limitations (like character counts).BotKit's API is intentionally simple—you can create a complete bot in a single TypeScript file!
[BotKit]: https://botkit.fedify.dev/
---
All three projects are open source and hosted under the [@fedify-dev] GitHub organization. While they serve different purposes, they share common goals: making ActivityPub development more accessible and expanding the fediverse ecosystem.
If you're interested in trying any of these projects or contributing to their development, check out:
- Fedify: <https://fedify.dev/>;
- Hollo: <https://docs.hollo.social/>;
- BotKit: <https://botkit.fedify.dev/>;
#fedidev
[@fedify-dev]: https://github.com/fedify-dev