Paddy for Lightroom

Paddy radically improves the workflow in Adobe Lightroom by allowing you to assign any adjustment setting - including moving the sliders and applying a preset - to essentially any key, external keypads, mouse buttons, a MIDI keyboard and MIDI controllers with physical encoders and faders.

This gives you all editing (and some other) tools of Lightroom at the push of a button or move a physical fader. You do not need the mouse any more to get to presets or to adjust the sliders.