Maxthon Browser has built a lots of handy mouse actions inside, such as Double Click on a Tab to close it, Double Click on Tab Bar to open a new Tab and etc.

Mouse Gestures
Hold down right mouse button and move in different directions, you can perform a lot of common operations with it.

Super Drag & Drop
Drag & Drop a Link to open it in new Tab. Drag & Drop to Perform a search on selected text. With key combinations, you can perform even more operations with this feature.