Various Traveller software.
Traveller 2 was created in Winforms.
Traveller 3 will redo that in UWP and try to modernize a bit. Traveller 4: UWP with mySQL for backend. Replaces v3.
Current Active Development
TravellerTracker UWP with SQLite for backend and Entity Framework. Basically starting over - the v4 was trying MVVM and failing horribly.
Licensed with the MIT license (it seemed the most permissive).