dvbackup encapsulates arbitrary files into a raw DV data stream suitable for writing on a DV tape. It uses all of the audio data and the space reserved for the AC coefficients of the video data. You also need dvconnect from the libdv project to transmit the data over firewire. The latest version of dvconnect is always included.
XScanMaster is a program to control intelligent lights using DMX512, based on the fixture library from GrandMA-firmware. The DMX512 output is done using DMX4Linux, which offers support for most common interfaces and many DMX512 lines. Also included are functions to control fixtures movements in calibrated reference environments. More than one reference setting can be added to any fixture, and any fixture can be selected to run in one of its reference environments or not. In the environment the user can control the fixture in different coordinate systems. Sceens and cues can be recorded on a fixture:feature base. Both can be included in other sceens or cues. Playing sceens/cues can be done from one or more "replay units"; each replay unit can run any program at a given speed (beatcounters are included).
pygps is a GPS user interface. It shows a listing of satellites, their locations in the sky, a list of latitude, longitude, altitude, status, etc., and moving maps. It was designed to work on the Compaq (now HP) iPAQ PDA running Linux, with a 240x320 screen. However, it uses glade, so that it also works nicely on larger screens, or on a landscape orientation of 320x240. It works with any GPS receiver supported by gpsd (which see).