Reaper + Lemur Line + iPad + osc

Reaper is my number 1 software for music performance due to it’s interface that links directly with OSC.  In other words you can remotely control and receive virtually all aspects of the interface – volume sliders, mute, solo, record arm, vu displays and so on using an iPad and osc app.  There is a little prerequisite knowledge to load a definition file and link devices wirelessly but once you get the hang of the setup, it can work really well in both windows and Linux running wine.