Nextcloud is open source file sync and share software for everyone from individuals to large enterprises and service providers.
calibre is an ebook library manager. It can view, convert and catalog ebooks in most of the major ebook formats.
Deluge is a full-featured BitTorrent client for Linux, OS X, Unix and Windows.
Amahi Netboot allows you to boot a computer on your local network off of an image stored on your HDA.
A PHP-based iCal file viewer and parser to display iCals in a Web browser. It displays iCal files in a nice logical, clean manner with day, week, month, and year navigation.
Geneotree is a GEDCOM viewer. It allows you to explore family trees in depth. It does not, however, allow you to create or edit GEDCOM files in the program.