calibre - Ebook manager, viewer & converter
TheRenamer - Automatically rename and organize your TV shows and Movies. Also moves them to your Media Library!
tinyMediaManager - A multi OS media manager written in Java/Swing
Delicious Library - Delicious Library 3: Catalog your books, movies, music, software, toys, tools, electronics, & video games. Archive your life.
FileBot - FileBot is the ultimate tool for organizing and renaming your Movies, TV Shows and Anime as well as fetching subtitles and artwork. It's smart and just works.
Data Crow - Data Crow is the ultimate media cataloger and media organiser.