Qt based Software Defined Radio Interface
If you are interested in SDR software or just SDR operation there is no better place to start than with CuteSDR. I've used the application with AFEDRI and CloudIQ SDRs and have found it easy to use and fully featured. Mo Wheatley the author also wrote SpectraVue which is available from Mo or from RfSpace. I've used Mo's DSP routines in my web site, radiocheck.us and found the code reliable, easy to understand and well commented.