Rumraisin is a Matrix application service that allows you to use any Matrix client as a RSS/Atom aggregator. It lets you follow your feeds from multiple devices while keeping the read/unread status in sync.

Rumraisin is best suited for single-tenant homeservers. There is currently no support for letting different users follow different sets of feeds. Nor are there any features for adding/deleting feeds dynamically, such as by sending commands to a bot.

However, if you run your own Matrix homeserver and just want a simple means of tracking the same set of feeds across multiple devices, Rumraisin could fit your case.

Free Software

Rumraisin is free and open-source software. The source-code for Rumraisin (and for this book), is available at GitLab under the MIT License.