inFlow Inventory - inFlow Inventory is inventory management software for small businesses.
Beyond Compare - Beyond Compare allows you to compare files and folders.
Snipe-IT - Managing assets with a Google doc or a shared Excel spreadsheet is more common than you think.
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
Skyware Inventory - Web-based Inventory Management.
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.