Project:Open Source SDR

The really cool bit about the USRP is GNU Radio. But you don't need a USRP to take advantage of GNU Radio...

http://wwwhome.cs.utwente.nl/~ptdeboer/ham/sdr/ http://oscar.dcarr.org/ssrp/

Open Source SDR
QR code

Poor man's USRP http://www.lightlink.com/mhp/iq/ http://openhpsdr.org/

http://sites.google.com/site/lofturj/sdr_widget

http://sdrtrack.drupalcafe.com/?q=node/2, http://www.amrad.org/projects/charleston_sdr/

Commercial products:

http://www.signalhound.com/index.htm

http://www.ettus.com/products