https://www.leapmotion.com

There was even a pull-request to 2048 to introduce gesture support: https://github.com/gabrielecirulli/2048/pull/149

https://developer.leapmotion.com/documentation

Languages:

• C++
• C#
• Objective-C
• Java
• Javascript
• Python

Platforms:

• Windows
• OSX
• Linux

There’s also potential investment funding for good ideas:

Leap Fund