WeTransfer - WeTransfer is a free service to send big or small files from A to B.
ViralSweep - Grow your fans and increase sales with sweepstakes and giveaways.
Dropbox - Online Sync and File Sharing
Woobox - Woobox helps you easily create powerful contests, sweepstakes, coupons, and more to grow your fans...
Mega - Secure File Storage and collaboration
Gleam - Marketing apps designed to help you grow your Business