The best, free temperature tool.

[Picard]

Third party, free, and small, should show fan speed and core temp.

 

[kayvee]

Speedfan.

http://www.almico.com/speedfan.php

 

[dudewotevr]

Speedfan.

http://www.almico.com/speedfan.php

+1

 

[cerebus]

Coretemp is also good but it doesn't give fan speeds:
http://www.alcpu.com/CoreTemp/

Aida64 has replaced Everest, it's a great paid app for system monitoring:
http://www.aida64.com/

 

[Rudimental]

HWMonitor

 

[SouthBit]

+1 to Speedfan

 

[Pada]

You can try HWMonitor too. It shows system temperatures (CPU, M/B + HDD), fan speeds and battery levels (incl UPS').

 

[Nerhzelok]

Use HWMonitor too. S'awesome.

 

[wpswart006]

I didn't pay for my finger, maybe give it go?

 

[greggpb]

I didn't pay for my finger, maybe give it go?

It might be free, but I'm sure you don't want to tell me what my dog's temperature is.

 

[ingeon]

HWiNFO32

Also not to bad.