Inno Setup - Inno Setup is a free installer for Windows programs.
Stockpile - Stockpile is a free online inventory system for small business and at home uses.
Debreate - Debreate is a utility to aid in building Debian packages (.deb).
inFlow Inventory - inFlow Inventory is inventory management software for small businesses.
Setup Factory - Setup Factory Software Installer Builder for Windows.
Snipe-IT - Managing assets with a Google doc or a shared Excel spreadsheet is more common than you think.