The 184.108.40.20628 version of PowerSDR is provided as a free download on our website. PowerSDR belongs to Education Tools. This free software was originally created by FlexRadio Systems.
From the developer:
The FlexRadio PowerSDR application provides all DSP and hardware control functions for FlexRadio Systems.
The centerpiece of FlexRadio PowerSDR features its real-time, high dynamic range, interactive spectrum display up to 192 KHz wide (dependent on SDR hardware).
You may want to check out more software, such as PowerSDR-IF Stage, PowerSDR-IQ or NaP3, which might be related to PowerSDR.