inFlow Inventory - inFlow Inventory is inventory management software for small businesses.
NetBox - NetBox is an open source web application designed to help manage and document computer networks. NetBox was developed specifically to address the needs of network and infrastructure engineers.
Snipe-IT - Managing assets with a Google doc or a shared Excel spreadsheet is more common than you think.
Skyware Inventory - Web-based Inventory Management.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
mobe3 WMS - mobe3 WMS is a cloud-based warehouse management system that allows you to automate your warehouse inventory.