app4mac today released CheckUp 1.0 (US$49), a new tool to check the health of your Mac. Built from the ground up with Mac OS X technologies, CheckUp features powerful tools to monitor the behavior and health of your Mac, and is optimized for Mac OS X 10.4 and Mac OS X 10.5. CheckUp is designed to monitor the usage of CPU, Memory, Disk Drives and Network Adapters. You can display detailed information about all running processes and pause or terminate these at any time.