SpeedFan is a program that monitors voltages, fan speeds and temperatures in computers with hardware monitor chips. SpeedFan can even access S.M.A.R.T. info and show hard disk temperatures. SpeedFan supports SCSI disks too.Discontinued
The developer promised new versions, but the program seems to be no longer updated. Latest version, 4.52, released in June 2016, can be still downloaded from the official website.
Corsair Link Dashboard software allows you to monitor your system and gives remarkable control over your case fans, lighting, and compatible Corsair power supplies and Hydro Series liquid CPU coolers that work together for optimal cooling and etc.