Nettxrx is a small desktop or tooltray utility that displays a graph of network bytes sent/received, updating every second. It also optionally shows CPU usage. It can log and report usage. Nettxrx runs on WinXP, Vista, and Win7.
sysprofd is a system profiling daemon that can report results through a tcp connection to a remote client. sysprofd profiles cpu, memory, and swap usage statistics, process status statistics e.t.c. Imagine using it to easily monitor lots of linux boxes