MBM or Motherboard Monitor is a popular one. They are up to something like 5.xx. I use a simple little one called CPU cool. It has a few display options. I just show my CPU temp in the system try (by the clock). It does not show HD temps. It does have alarms and shut-off features that are set to limits you set and turn on for fans speed, temps, or voltages. I started using for its cooling features for older Duron and Athlons, but this cooling features does not work on nForce2 boards.