Seamless sync between different computers.

It turns out that I work on many computers and on many projects the same time. That requires an immense effort to synchronize my work from different computers. Recently I have tried the solution from http://www.beinsync.com/. I liked the idea of seamless synchronization of the files to one place. I don't even have to care about backing up my work. Everything is done automatically. That saves me a lot of time. Unfortunately free trial is too short. One day I will find the budget to buy this service.