viewstate is a decoder and encoder for ASP .Net viewstate data. It supports the different viewstate data formats and can extract viewstate data direct from web pages. viewstate will also show any hash applied to the viewstate data.
Sysmon is a tool to monitorise the state of one or more computers. Its based on a daemon and a php script. The first has to be runned in all boxes you need to check, the second calls the daemon and prints the state into a nice web frontend.