A search field at the top of this webpage offers options to search any visible folder or any parent folder, as well as to filter your search by type of data: images, movies, audio, presentation, Word, Excel, Numbers, Pages, PDF, PNG, JPG, Photoshop, or Zip. Searches aren't as fast as a Spotlight search while sitting at your computer, but they're fast enough considering you're searching your Mac from afar.
Once you've found the desired file or folder, you just tap the Copy To Dropbox button that appears next to the Info button. After a short delay, you'll see a dialog box confirming the copy. Your file or folder--a copy of it, at least, as the original remains in the location you found it--is now accessible in the Spotdox folder inside your Dropbox folder. (Specifically, the copy of the file is created in Dropbox/Apps/spotdox/uploads.)
This means the file is now available on any of your computers and other devices with access to your Dropbox folder, as well as on the Dropbox website and from within any Dropbox-enabled app. You can also tap the Uploads button in the Spotdox Web interface for quick access to all the files you've copied to your Spotdox folder, or tap the Dropbox button to peruse your actual Dropbox folder in Spotdox's browser.
If you want to move a file out of your Dropbox folder--say, to free up space in a Dropbox account that's nearing its capacity--you can do that, too: While previewing an item in the Dropbox view, clicking or tapping the Move Out Of Dropbox button moves that item to your Downloads folder.
Browsing your drive in Spotdoc's Web interface is a bit sluggish, and using Web-browser Back/Forward buttons to navigate between representations of folders feels clumsy compared to using the Finder. But if you rely on Dropbox to keep your files and folders accessible from all your devices, I feel confident in saying that Spotdox will eventually get you out of a self-inflicted jam.
The developer is currently offering a free lifetime membership for the first 10,000 users. Pricing for subsequent users has not yet been announced.
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