gdivelog is a SCUBA dive logging application for GNOME. Can download Suunto Cobra, Mosquito, Spyder, Stinger, Vyper and Vytec; Sensus Pro; and Citizen Hyper Aqualand. Can import from SmartTrak/DAN DL7 and Suunto Dive Manager 2.
KDiveMaster is a KDE application for SCUBA-divers. It is intended to serve as an electronic dive logbook.