Media
Plex
Plex media server allows you to aggregate all your personal media and access it anywhere you go. Enjoy your own content on all your devices with Plex.
Bazarr
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.
Systems
Kanboard
Kanboard is a free and open source Kanban project management software.
Glances
Glances is a cross-platform monitoring tool which aims to present a large amount of monitoring information through a curses or Web based interface.
Misc