ExpanDrive acts just like a USB drive plugged into your PC. Open, edit, and save files on remote computers from within your favorite programs—even when they are on a server half a world away. ExpanDrive enhances every single application on your computer by transparently connecting it to remote data.

BUG is a modular, open source system for building devices.

Text editor nerdery

Synergy lets you easily share a single mouse and keyboard between multiple computers with different operating systems without special hardware. It's intended for users with multiple computers on their desk since each system uses its own display. This project is a maintenance fork created to implementing patches and bug fixes to synergy.

UNetbootin allows you to create bootable Live USB drives for a variety of Linux distributions from Windows or Linux, without requiring you to burn a CD. You can either let it download one of the many distributions supported out-of-the-box for you, or supply your own Linux .iso file if you've already downloaded one or your preferred distribution isn't on the list.

Interesting in browser OS.