A configuration management database (CMDB) is a database that acts as a data warehouse for storing a range of relevant information about hardware and software assets (commonly referred to as configuration items (CI)) in an organisation, as well as the relationships between them. The repository provides a means of understanding the collection of critical assets and their relationships, such as information systems, upstream sources or dependencies of assets, and the downstream targets of assets. Source: Wikipedia
Open Computer and Software Inventory Next Generation is free software that enables users to inventory IT assets. OCS-NG collects information about the hardware and software of networked machines running the OCS client program. OCS can visualize the inventory through a web interface.
Racktables is a nifty and robust solution for datacenter and server room asset management. It helps document hardware assets, network addresses, space in racks, networks configuration and much much more!
OneCMDB is a CMDB aimed at small and medium sized businesses. OneCMDB can be used as a stand-alone CMDB to keep track of software and hardware assets and their relations. Thanks to its open API:s it can also be a flexible and powerful Configuration Management engine for other Service Management software.
GestióIP is an automated, web based IPv4/IPv6 address management (IPAM) software. It features powerful network discovery and IP tracking functions and offers search and filter functions for both networks and host, permitting Internet Search Engine equivalent expressions. This lets you find the information that administrators frequently need easily and quickly.