BetterTouchTool is a great, feature packed app that allows you to configure many gestures for your Magic Mouse (1 & 2), Macbook Trackpad and Magic Trackpad (1 & 2) and also Mouse Gestures for normal mice. It also allows you to configure actions for keyboard shortcuts, normal mice buttons and the Apple Remote.

Window Magnet will change the way you work with your Mac! Easily snap windows into various sizes and positions by simply dragging them to the edges and corners of the screen. Maximize them, place them side by side or deploy them into all four quarters of your screen in the blink of an eye.

Rhino - Versatile 3D modeler. Rhinoceros can create, edit, analyze, document, render, animate, and translate NURBS* curves, surfaces, and solids, point clouds, and polygon meshes. There are no limits on complexity, degree, or size beyond those of your hardware.