LiveKive takes aim at services like Dropbox and SugarSync, though at the moment it's lagging behind in terms of features. As it stands, LiveKive is only compatible with Windows and OS X. There are no mobile clients yet, though with AVG's strong presence on Android we wouldn't be surprised to see an app arrive in the near future.
The company is offering a heck of a deal right now, however. If you sign up for a paid account during the launch phase, you can score unlimited storage for $80 for a whole year. You can't even score 50GB per year at that price from Dropbox, so if cost and space are more important to you than cross-platform availability, LiveKive might be worth checking out.
If you're not interested in ponying up any cash at the moment, you can still get a 5GB account free of charge. Just head on over, and create a LiveKive account.