The Survex Project - An open source, cave-surveying software package designed to be portable that can run on a variety of platforms. - http://www.survex.com/
SmallRTV (Leo White's software) - An alternative utility to play RiscTV video in a window. Features full picture and audio control. - http://www.brighteyes.u-net.com/html/software.html
Download page - Easyview can be downloaded. Displays sprites JPEGS. - http://pip.dknet.dk/~tolsson/files/