Damn Good Tools - Easy-to-use, fun productivity tools—free (and open-source).
InTouchApp Firefox Extension - Save contacts & data from websites to your phone
Flow State Training - Chrome extension with a timer to trigger productivity.
Cervino - One app for everything you do
ArchiviCo - An easy way to store your important documents
Productivity Tools by Dropbox - Scan, share, collaborate & provide feedback on your ideas