Syncdocs works fine in along with with Dropbox. You can sync to both Google Drive and Dropbox simultaneously. You can also select a subset of folders in either to sync.
Why Multiple Syncing?
There are a few reasons one might want to sync to Google Drive and Dropbox at the simultaneously. The main reason is to get your Dropbox files synced with Google Docs and back. This means you can easily edit Dropbox files online, share them to anyone and access them on any device.
Dropbox has better Linux/Mac OSX support than Syncdocs, so you can use Syncdocs and Dropbox together to sync files from your Mac and PC to Google Docs.
Google Docs provides great online collaboration and and online office suite and is accessible from more devices than Dropbox.
You might also want to sync to multiple cloud servers for redundancy. Syncdocs uses Google Storage to store your data and Dropbox uses Amazon S3.
How to Sync Google Drive to Dropbox
Previously Syncdocs needed the Dropbox or Google Docs folder to be in a specific place. Now, with Syncdocs version 1.23 or later, you can simply select your Dropbox folder and have it synchronize to Google Docs with Syncdocs. Here’s how:
To access the selective sync menu.
1. Right click on the Syncdocs taskbar icon, and select Preferences. Then in the folder tab, click the Select button
2. Click on “Add folder” and select My Dropbox.
Note that you don’t have to Sync your entire Dropbox folder, you can select a sub-folder inside it, too.
That’s it! Changes you make to stuff in Dropbox will be synced to Google Docs and changes in Google Docs will be mirrored back to Dropbox.