Check out:

Minimal Coverage - Tool for finding the most efficient coverage of an area with predifned polygons. When you have many overlapping aerial photos of some terrain, this can be used to find the least number that cover it completely.

LastPassCrack - I've written this to recover my LastPass password after forgetting most of it. It worked.

Pad Hotkeys - Program mapping xbox controller buttons and analog sticks to mouse and some key combinations.

Path picker - Attempt to recreate the basic functionality of the Facebook Path Picker using C#.

Sample Shop - Sample website with product listings and shopping cart implemented in React