WiSPY-Tools are a set of open-source tools for supporting the device. They are known to work on Linux and OSX, and ought to work on BSD variants. The drivers are written as user-space interfaces to LibUSB.

Wispy-Raw – A basic dumper from the USB interface to stdout, without RSSI to dBm conversion.
Wispy-Curses – A simple libcurses text-based graphing tool.
Wispy-GTK – A full GTK grapher, similar to the windows graphing tool

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