Gab,
There are many, many possibilities, too many to list here. Basically, any software that has
CAT control can be used. Some programs, such as HRD and TRX-Manager, have special
interfaces to emulate rigs. Others just have simple CAT interfaces to control the VFO and
maybe some controls.
Some are free, such as DX Labs, others costs some money, such as HRD (new version) and
TRX-Manager. It is best to download and try the trial versions and see what you prefer to use.
Note that that graphic depicts an Icom tranceiver, which you can use COM0 in the RRC for
CAT control. Other transceivers (Kenwood, Yaesu, etc.) would require using COM2 of the RRC
to carry CAT, so only COM1 would be available for controlling other devices, such as a rotor.
73,
Mitch DJ0QN / K7DX