Windows Application Driver (WinAppDriver) is useful for integration testing when you're working on a Windows desktop app project.
Scoop feels like Homebrew for Windows. It can also fetch and install packages from the Internet to get you up and running with open-source tools.
On using Windows socket functions (such as WSARecv, and WSASend) inside Ruby extensions on Windows.
Getting the Haskell SDK bindings running on Windows, using the SDL 1.2.