UAVXGS 1.9 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. The program is included in Development Tools. The program's installer file is generally known as UAVXGS.exe. The actual developer of the free software is G. K Egan. The following version: 1.9 is the most frequently downloaded one by the program users.
From the developer:
UAVXGS is a simple PC based ground-station GUI which is a intended as a base for other ground-station development. It is written in Visual C#.
It is possible to also use the UAVXGS via a Rf data link. There is a variety of Tx/Rx's that can be use, such as ZigBee or XBee, long range Bluetooth and FrSky Telemetry. Set the baud rates for 9600bps and follow that data link equipment's setup instructions.
You may want to check out more software, such as GnuWin32: PlotUtils, Menu Creator 2007 & Menu Extended or SharedModelDemo, which might be similar to UAVXGS.