WeightTrack - With this application you can track your body weight and view your progress towards your goal. This application shows your progress as a report and as a graph
WeightWatch - Weight Watch is an open-source application that allows you to track your body weight over a period of time.
This program follows the methodology brilliantly described by Paul Walker in his online book The Hacker's Diet, and attempts to mimic the usability and features of the applications found under the Computer Tools chapter of the same book