It’s possible to sync Google Docs to Dropbox, automatically send Gmail attachments to Dropbox, play music in a browser from your Dropbox music files, encrypt your Dropbox, easily host a website or blog in Dropbox, collect URLs and web clippings to Dropbox and to automate file syncs between all of your social networks and Dropbox. You can even view all of your Dropbox files alongside your Google Docs, Box files and FTP files in the one web interface. If you want to know the best apps to do all of these things, then read on.

via 10+ Best Apps For Your Dropbox.

Here‘s another top 12 list.

I thought DropBoxFiler has potential in that it makes using the cloud transparent to the user.  I’m not sure how well it works in practice however and this seems rather trivial to implement on a nix box.  So far no Dropbox apps stand out as having much value added over the standard Dropbox UI.

So how does it work? Well, Dropboxifier simply fools applications into reading and writing directly from Dropbox! Saved games and profile data can be placed in Dropbox, a symbolic link put in its place (which is kind of like a shortcut at the file system level), and applications/games won’t even notice – they will read and write directly to your Dropbox folder.