Sketch

Design Tools
Tools
V Move tool mac
A Frame / Artboard tool mac
R Rectangle tool mac
O Oval tool mac
L Line tool mac
T Text tool mac
P Vector (Pen) tool mac
Layers & Objects
+G Group selection mac
+⇧ Shift+G Ungroup mac
+D Duplicate selected layer mac
+R Rename layer mac
+] Move layer forward mac
+[ Move layer backward mac
+A Select all mac
DEL Delete selected mac
Canvas & Zoom
++ Zoom in mac
+- Zoom out mac
+0 Fit canvas to window mac
+1 Zoom to 100% mac
File
+Z Undo mac
+⇧ Shift+Z Redo mac
+S Save mac
+⇧ Shift+E Export selected layers mac