Submin provides a Web-based admin interface to your Subversion and Git repositories. Its features include user/group management, path permission management, the ability to create svn repositories and managing commit email messages. For Subversion, authentication is done with htpasswd/svn authz, so it can use the same login information as apache2/svn (and trac). For Git, ssh is used, and the login information is synched whenever a change is made. The Web interface can also work with NGINX/uWSGI, but the Subversion part only works with Apache.
eduMagnet can search and access different online video sites (YouTube, Blip, TeacherTube, RSS, German public TV, etc). Students and pupils can create playlists of lectures and talks and play educational content using an embedded video player (MPlayer). As an OLPC project eduMagnet is developed for the sugar OS, but can also be used in any Linux environment using GTK. Students may synchronize playlists to the online platform eduMagnet.org so that other users can subscribe to their playlists. Access to new online video sites can easily be added using python plugins ("Magnets").
phpLiteAdmin is a Web-based database admin tool with support for SQLite 2 and 3. It consists of a single 60KB source file that can simply be dropped into a directory on your server and then visited in a browser. There is virtually no setup required except for specifying your database(s). The available operations, feature set, interface, and user experience is comparable to phpMyAdmin for MySQL.
Coq au Vin is a blogging engine written in Chicken Scheme. It is designed to appeal to users who have basic Web development skills (i.e., who know HTML and CSS), are able to install their own server-side software, and would rather edit a template than press 105 buttons to customize their sites.