mouse34Btn

mouse34Btn 0.9

Free
Use your 3-th and 4-th mouse buttons to Copy (Cmd+C) and Paste (Cmd+V).
 
0.9.6 (See all)

mouse34Btn lets you use your 3-th and 4-th mouse buttons to Copy (Cmd+C) and Paste (Cmd+V) in all Mac applications that support these commands. It’s very lightweight and is meant to replace Logitech Control Center LCC or BetterTouchTool which otherwise are good apps, but are too heavy.

Open source