The Cambridge Z88 Software project was created by and for the "die-hard" users of the Cambridge Z88, the iPad of the 80s. Its object is to streamline the operating system, OZ, and build new Z88 applications by replacing the built-in ROM with a larger device. It also includes a Z88 emulator and debugging environment.
Subsurface is a dive log program. The user can download dive information directly from a large number of supported dive computers. Subsurface is able to track multi-tank dives with air, Nitrox, or TriMix, weights and exposure protection used, dive masters, and dive buddies, and allows the user to rate dives and provide additional dive notes. It calculates a wide variety of statistics of the user’s diving and calculates and tracks information like SAC rate or OTU. Subsurface allows the user to print out a detailed log book including dive profiles and other relevant information.