CrossLoop provides a quick, easy, and completely free way to give a colleague, a friend, or a relative access to your computer. After installation, your PC will be assigned a 12-digit access code each time you start the program. You then give that number to another user to virtually share your desktop. Once connected, that user will have full access to your machine.

The odd nature of sharing a desktop cursor and the inability to add multiple users makes CrossLoop illogical for proper business presentations. However, the complete system access and 128-bit encrypted connection combine to create a great solution for low-budget, long-distance tech support. Guests can use any app and save files on your computer, as if they were sitting in front of the machine. No router configuration is required--a big plus. File transfers are now supported, but the purpose here remains collaboration: CrossLoop doesn't work without explicit permission from the host.

Since simplicity is a key attraction, it lacks more advanced features, and the connection must be made in two minutes or it times out. While the interface and the features are simple, CrossLoop offers a secure and fast method for two users to collaborate on one PC.