Which Tool can be used for Inventory & Management of Cisco devices.

Cisco IP Solution Center (ISC). There are lots of3rd party softwares available too.

When compared to other network monitoring software providers on the market, WhatsUp Gold gives us in-depth identification of where the problem originates. WhatsUp Gold software offers additional features that other vendors provide, but at a more competitive price.”

You can choose Cisco Device Manager (SDM). It is nice graphics user interface tool which can be used to manage the networks, securities, VOIP's, Wireless LAN's, and other devices. You can download it from www.cisco.com

Maybe "Cisco Configuration Professional"