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I have three computers in following status:

  1. A pc at working place with Windows XP os.
  2. A laptop at home with Ubuntu os.
  3. A laptop at home with Windows 7 os.

also I haven't any internet connection for using tools such as Dropbox or Google Drive. I find several tools such as Unison or JFileSync for sync by a external hard drive or usb stick.

I have two questions:

  1. Has anyone more suggestion or idea for solve this requirement?
  2. Are there more free and power tools for my situation?
share|improve this question
Have you tried ? It doesn't support Ubuntu though – AbhishekGirish Oct 30 '12 at 6:36
So, you've found Unison. Have you tried it already? It should do what you want. – slhck Oct 30 '12 at 6:38
@AbhishekGirish No, because I want install on three operation system. – MJM Oct 30 '12 at 6:48
@slhck still no. – MJM Oct 30 '12 at 6:49
"no", how exactly? Have you tried it? What aspects doesn't it cover? If you could expand your question to mention that, we could probably help you more. – slhck Oct 30 '12 at 6:51

Personally, I'm a big fan a NAS systems. I know you can't connect to the internet but if you have a home network many NAS solutions will just plug right into your router these days. If you've never heard of NAS it stands for Network Attached Storage, and it's acts like a standalone disk(s) on your network. How you "mount" it depends on the OS but you should be able to make it happen on all three platforms with pretty much any NAS.

If you don't have a home network and need a solution like JFileSync check out this page for an overview of what's available:

share|improve this answer
The OP has one computer sitting at work, the others at home. A NAS wouldn't help him, I guess. – slhck Oct 30 '12 at 7:16
Thanks, really my main problem is between office and home computers. However I will read above post. – MJM Oct 30 '12 at 7:17
just noticed that... one of these days I'll figure out how to read – Ben Glasser Oct 30 '12 at 7:17
some NAS systems support VPN, but that could be tricky depending on your network set up at work. not to mention the fact you have no internets :( – Ben Glasser Oct 30 '12 at 7:21

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