Stockpile - Stockpile is a free online inventory system for small business and at home uses.
Inno Setup - Inno Setup is a free installer for Windows programs.
inFlow Inventory - inFlow Inventory is inventory management software for small businesses.
Advanced Installer - Advanced Installer is a Windows installer authoring tool for installing, updating, and configuring your products safely, securely, and reliably.
Snipe-IT - Managing assets with a Google doc or a shared Excel spreadsheet is more common than you think.
InstallShield - If your software targets Windows, InstallShield is your solution.