Just a heads up, I have just released a new rig controller that primarily works with the Elecraft KX line KX3, KXPA100 and PX3 as well as the XG3 RF generator. It also supports the Sark110 antenna analyzer as a bonus.
The XG3 mode gives you access to all the RTTY/CW beacon functions which are not present in the Elecraft version of the utility.
You can use either direct serial/USB connection to your Elecraft devices, or use a Wifi converter like the Pignology Piglet, which is how I usually connect.
This is a universal Chrome packaged app which runs on pretty much any computer as long as you can install Chrome on it. And is also works on Android - OK with phones and tablets, though the larger the screen, the more comfortable. It still does a good job at adjusting to the screen size.
Wizkers:Radio supports a lot of unique capabilities such as a graph of most radio and amplifier parameters, PX3 screenshots, a quick "memory card" system for each KX3 band as well as support for the PKX3 PSK-D and FSK-D modes.
You also get a pretty advanced configuration screen that will allow you to adjust most audio settings as well as all band-dependent settings in just a couple of clicks.
And one last thing: Wizkers:Radio is fully open source, head over to wizkers.io
to learn more about the underlying framework!
Chrome version: https://goo.gl/SzpjII
Android version: https://goo.gl/ngcRXe