Dropbox-like client for FTP? [closed]
Solution 1:
Did you try ownCloud? It seems that it would fit with your use case of a "Dropbox-like". And it can use FTP as a backend for storage.
If you're OK with doing/funding a bit of development or waiting for a new release, Syncany is apparently developing what you're looking for, and FTPBox runs on .NET Framework 4, which Mono supports (with a few exceptions) on Linux and which also runs on Wine (in case these exceptions would be needed by FTPBox).
Solution 2:
I think you might find that the recently-released Alfresco Sync handles this quite well: https://addons.alfresco.com/addons/desktop-sync-alfresco
The SourceForge Description:
This application synchronizes files between a client and Alfresco using Web Services. The application currently synchronizes files in document library of any site a user has access to. The application is built using Java and uses jNotify. The original framework for this application was developed by Sridhar Kovuru during his time at Worksy (www.worksy.com). Kristijonas Malisauskas have done a great job finishing the application during his internship at Worksy. We thank Andrei Colța at YOPESO (www.yopeso.com) for his help with testing at a very early stage and with his work on making the application work on Mac and Linux.
In practice, the tool works well, though the GUI needs a bit of work.
As an aside, at the recent Alfresco Summit in SF I heard a few people mention success with CMIS Sync. That said, I cannot vouch for it, having no first-hand experience (but thought I should mention the only other tool of this sort of which I am aware).
I'll follow this question as I'm in the same boat!