I am not heavily depending on  cloud computing, because uploading and downloading large files are wasting bandwidth and time. So, synchronizing among the USB pendrives or external harddisks is my solution for multiple computers.

I have tried several synchronize software:

• GoodSync was good but not free
• Synkron, cross platform, difficult to read the comparison of the folders
• DirSync Pro, also cross platform. Also difficult to read the comparison of the folders

So, the best of the best which I am using now is FreeFileSync. The features I like are: