Today, one of my favorite "cloud" file sync, AeroFS solutions just launched. I have been a beta tester on the program for about a year, and successfully maintained a directory sync between two of my computers. Overally, the program works well, and is worth taking a look at.
You may have used programs like Dropbox, SkyDrive Google drive to be able to sync data between multiple computers, and share files with others. All of these solutions, however, force you to keep your data on the service's servers. This has a few notable effects. First, you have to trust the security of the service provider. Second, you are subject to the terms of the service provider, and any monitoring they may perform or allow. Finally, it usually comes with limits on capacity or bandwidth. Most of us, however, have made the compromise on these things to get access to the services, as it is quite convenient to be able to access data from the Internet and share files easily with others.
All of that changes with something like AeroFS. It provides similar functionality to the other big services, but instead of you having to store your data on their servers, it is simple shared from your computer directly. You maintain control of your data at all times, and there are no capacity limits. In addition, several users have reported that the sync performance between machines on the same LAN (like your home) is significantly better than the other services. Finally, for anyone that feels strongly about privacy, this is a better solution than the truely "cloud" based services.
AeroFS also offers a private cloud version for businesses with firewalls and other protections which limit usage of internet-base storage and file systems.
So I recommend that you give AeroFS a look. I expect it will be an up and coming star.
http://www.aerofs.com
