WindowsGSM - A Game Server Manager works on Windows Platform.
Pufferpanel - It's made for hosting your Minecraft server. It's open source.
Steam Library Manager - Steam Library Manager is a tool created to manage your Steam and Origin Libraries in ease of use.
Open Game Panel - OGP is a game server control panel.
Game Backup Monitor - Automatically backup your saved games with optional cloud support.
Steam Mover - Do you have a super-fast SSD that is too small to hold all your steam games at the same time? Then try Steam Mover.