GeekTool

GeekTool screenshots

Application for OS X 10.6 or later.
About window
GeekTool 3.0 : About window

Alternative downloads

Temperature Gauge
4.7.7
Monitor and log all the temperatures and fan speeds inside your Mac.
CoolBookController
2.22
CoolBook lets you monitor CPU frequency, voltage, and temperature.
PaperScreen
1.0
FREE
Background image changer application.