Tripometer
A mileage tracking utility for the iPhone.
StudyBuddy
A self-quizzing application to help memorize lists (such as vocabulary), for Mac OS X.
GFlashCards
A self-quizzing application to help memorize lists (such as vocabulary), written in C#.
TrackTime
A very simple application to track the amount of time you spend on different projects, writtin in C# for Windows.
Automation Toolbar
A set of utilies for motion control engineers.