AVA Software can be downloaded to try for free from the Radleys website here. By default, it operates in demonstration mode, to allow the capabilities of the software to be explored, but with control of simulated (virtual) devices only.
To purchase (or upgrade) an AVA licence so you can control real devices, please contact Radleys or your local distributor for a quotation.
AVA has four levels to suit your application and budget. You can upgrade to a higher level if your needs change.