RackTables - Racktables is a nifty and robust solution for datacenter and server room asset management.
Asset Panda - The cloud is playing a very important role for companies who utilize asset management software to track their assets or inventory. See how Asset Panda is leading the field thanks to their cloud-based tracking platform.
DCImanager - DCImanager is a platform for managing physical equipment. Connect any physical equipment to a single platform. Use the platform to manage your servers, switches, PDU as well as physical and virtual networks.
OpenMAINT - openMAINT manages movable assets, the real estate, and the related maintaining, logistic and economic activities, GIS and BIM
Opendcim - a free, web based Data Center Infrastructure Management application.
Reftab - Free asset management software with check in check out. Track assets with custom asset tags and mobile apps. Supports handheld scanners for quick item check out.