Kodi multimedia center.

Restic, a reliable backup solution.

I use it and love it, but still think the logo is a bit weird, reminds me of some evil message you see after a virus crashed your PC 😁.

Hope more will follow.

Not sure about the self-host part but Jabref and Zotero might fit.

This is a good starting point if you want to dive in.

What are the reasons for the Pi Hole to Adguatd switch?

Audio Books Bay (ABB) is good too.