There are the Icom PCR-100 and PCR-1000 receivers, the 100 has been discontinued but you can find them on eBay sometimes. The 1000 seems to still be current production (at the very least,
www.hamradio.com is still selling them). You can also check out the Winradio products,
www.winradio.com.
Look at the Supported Radios section of
http://hamlib.sourceforge.net/ to find a list of computer-controllable gear.