Gspace is a Firefox extension, similar to Gmail Drive on Windows Platform. You will need Firefox browser to enjoy Gspace, it is free and available to download here. With Gspace you can turn your gmail account into online storage tool stuffed with handy features.
Gspace can be downloaded from here. First install the G space after that, open your firefox browser and go to: ‘Tools –> Gspace’ to run it. Gspace console is divided in 4 key areas for you to manage your files: My Computer / My Gspace / Transfers / Status. Before anything else you’ll need to enter your gmail details through ‘Manage Accounts’ option. Once done you should be able to login and test things out, in case you are experience any problems check out gspace faq section.
Gspace has four different operational modes:-
1. File Transfer Mode: download/upload
2. Player Mode: listen to your stored music files using gspace’s built-in media player
3. Photo Mode: view and browse through pictures and albums stored on gspace
4. Gmail Drive: manage Gdrive files






Looks like a good ad-on. But i think we have lot of other storage services also.
One more storage tool…and this for firefox alone…but firefox and its add-ons are always cool…