DropN9 is a DropBox client that has been previously available for the Nokia N9/N950 but has now hit the Nokia Store for download for the irresistible price of FREE !!!!
You can:
A DropBox is something that no OS should do without 🙂
In using the application it did initially complain about not being create the following directory:
/home/user/MyDocs/dropbox/cache
An easy work around is to manually create it.
Source Nokia Store