Jeremy Ozer
Netstat Widget
FreeMonitor your bandwidth usage.
WindowsCPU Graph
FreeCPU Graph Widget: Monitor Your CPU Usage and Temperature
WindowsLonghorn Processor Graph
FreeView a graph of your processor usage.
WindowsDual Processor Monitor
FreeMonitor dual processor usage.
WindowsSpeedFan Temperature Monitor
FreeSimple CPU Temperature Monitor Widget
WindowsBandwidth Graph
FreeBandwidth Graph: Monitor Network Traffic Simply
WindowsNetwork Bandwidth
FreeNetwork Bandwidth: Monitor Your Internet Speed
Windows