PilotGOne is a GO game viewer and recorder for PalmOS. It uses the Smart Game Format (SGF) for input and output. PilotGOne can play back existing SGF files with variations and comments, and it can also be used as a board for stand-alone play. It uses only 42 Kb of Palm Pilot memory, and it supports comments, marks/labels, and annotations. Other features include Zoom-In for bigger image, editing of game records, sorting/searching of games, handicaps, Komi, and board sizes 5x5, 9x9, 13x13, and 19x19.