StreetSign is a digital signage system, originally written for the TeenStreet 2013 (Germany) youth congress. It works with a single server, and multiple client computers connect over the network. It is lightweight enough that a Raspberry PI can run as the server for smaller installations.
Enhanced Navigation Facilities for HTML5 Videos allows Web developers to provide a list of scenes by which site visitors can click on a single scene to jump to a given location in the video. The currently-playing scene is highlighted. Other features include framewise stepping forward and backward, moving to the start and end of a video, fast forwarding, and rewinding.
eLabFTW is an electronic laboratory notebook system. Once installed on a server, every member of a lab can write up their experiments, upload files, manage a database of products (antibodies, chemicals, siRNA, papers, or whatever you want). It was created with usability and security in mind, is very easy to use, and has a long list of features specific to research life.