From another thread:

For what it's worth, Dropbox fits my needs most of the time, but every time I use Mega I become more and more impressed with it. It also has mobile apps (iOS/Android) and desktop clients for Windows, OSX, and Linux, as well as browser extensions. And the 50GB of storage is nice, too.

-Deozaan (February 04, 2016, 10:53 PM)

another option, especially for lots of data. (No idea how or how well the sync works though.)

-tomos (February 05, 2016, 04:03 AM)

Thanks Tom, I'll take a proper look later but the blurb I read (quickly) sounds good.

P.S. And it's also for situations when you want to force the direction of the sync, i.e. when you want to ignore certain changes for certain files or folders on one machine and overwrite them with older versions from the other machine.

-dr_andus (February 02, 2016, 06:30 PM)

Just to clarify when this might be useful. Image you have the same already synced copy of a database file on the desktop and on a laptop. Then you do a lot of changes on the laptop to that file.

Then you reopen the same database application later on the desktop, to check something without changing anything. However, even that would have modified the file, as lots of database type apps might modify a file when you just open it to look at it.

Some cloud services might pick the desktop version as the latest version and overwrite the laptop version that has the important changes. Allway Sync allows you to review the files and force the sync in the direction in which you want it to happen, not which file was changed last.

-dr_andus (February 03, 2016, 12:16 PM)

At least this way then you're always in control.  I don't like the idea of automatic updates of any kind - I always like to see what's being changed or installed etc.

Just one question, can you sync both ways?

^ Have you installed dropbox on both machines?

I'm not 100% clear what you mean by 'target folder' -- as I said above Dropbox will sync the contents of the chosen 'dropbox' folder from one machine to another.
You'll have to install it, and log in on both machines

-tomos (February 03, 2016, 09:22 AM)

I have Dropbox installed on both PC and Laptop and I'm signed in on both.

As the PC is new I want to transfer a lot of files from my Laptop across and then keep them synced - so I select some files from their parent folder on my Laptop and then drop them into the Dropbox folder (which I've previously named).  Now I know I can access these files from my PC (I saw them appear in the Dropbox folder on my PC) but I'd like them to be synced with a folder on the PC (target folder) but I'm not sure how to do that.

Or am I missing the point?  Are you supposed to use the files in the Dropbox folder?  Ideally I'd like to add or amend files in their parent folder (either on PC or Laptop) and they update in their parent folder on the other device???

Sorry for this confusion!!