Mylar is an automated Comic Book (cbr/cbz) downloader program heavily-based on the Headphones template and logic (which is also based on Sick-Beard).

Komga is a free and open source comics/mangas server.

Bazarr is a companion application to Sonarr and Radarr. It manage and download subtitles based on your requirements. You defined your preferences by TV show or movies and Bazarr take care of everything for you.

Deluge is a BitTorrent client written in Python. Deluge is cross-platform, using a front and back end architecture where libtorrent, a software library written in C++ which provides the application's networking logic, is connected to one of various front ends through the project's own Python bindings