Multi-Process Killer is built for one purpose: help you terminate more than one process at once, if this is what you need.
It has a single window that lists all the processes currently opened and allows you to select as many as you want to force close.
It offers a minimum amount of information about each entry as you only get the name of the process, the ID and memory usage; having the CPU usage would have been useful, too.
The details provided by Multi-Process Killer are not in real-time, but you can adjust the refresh rate to suit your needs.
This is a pretty light application and it could prove useful in some cases, although more experienced users would rather appreciate a tool with more features than this.