Clarkwood Software today announced the release of Peek-a-Boo 2.4, a utility that features an informative memory column in the process list window. This column allows users to tell at a glance which processes are using memory, and how much of each process’s memory usage is physical RAM and how much is virtual (paged-out) memory. Peek-a-Boo 2.4 is priced at US$20 and a free demo version is available.