"The Garage" is a Microsoft project which is a company wide program that encourages grass roots invention, tinkering, ideas and incubation of projects. In The Garage,employees get together after hours to build whatever they dream up and the results are often impressive.
99.9% of the Garage projects either ship as part of a Microsoft project or remain internal, but every once in a while there’s a project that doesn’t fit into any existing Microsoft product which will get a lot of request from employees who want to be able to share it with their friends and families.
Same thing goes with "Mouse Without Borders" tool which allows you to reach across your PC's as if they were part of one single desktop. Suppose you have two PCs connected to 3 LCD screens. Using "Mouse Without Borders" you can move your mouse between the 3 screens. What’s more, you can move files between the 2 computers simply by dragging them from one desktop to another.