There are 2 repositories under touchosc-layouts topic.
This project provides a TouchOSC interface to control grandMA3
My patches (Max, Max for Live, Pure Data), TouchOSC layouts and some other useful things for playing microtonal (but not only) music.
Control Endlesss Studio with your iPad and TouchOSC
Reaktor 8 STEPS Sequencer
Collection of TouchOSC controllers
Complete template to parameter the ToneX pedal from your computer using MIDI (standard MIDI or MIDI over USB). Switch presets, activate / deactivate effects (Reverb, Compressor, NoiseGate), tune effects parameters.
TouchOSC template for the Oberheim OB-Xd Virtual Synthesizer.
Reaktor ToyBox Tangle Pack Sequencer
This is a TouchOSC template to control the Roland GP-8 vintage guitar effect processor via MIDI
Simple template to switch banks / presets, and activate / deactivate effects (I call this the stompbox mode) on Hotone Ampero (MP-100, MP-80, probably Mini also). To be used with a smartphone as a pocket remote control.
A collection of TouchOSC layouts for TouchDCS.