PowerSDR
From HPSDRwiki
PowerSDR is the Microsoft Windows based client software created by Flexradio to operated their software defined radios.
It has been adapted (primarily by Bill Tracey, KD5TFD) to work with the HPSDR Mercury, Penelope, Ozy, and Janus boards.
As of this writing (May 2009) the latest HPSDR modified version of PowerSDR can be found on the HPSDR SVN @: svn://206.216.146.154/svn/repos_sdr_windows/PowerSDR/branches/kd5tfd/PennyMerge/bin/Release
PowerSDR is licensed under the GPL.