Dropbox - Online Sync and File Sharing
Rackspace - More than 100,000 businesses trust Rackspace with their hosting and cloud computing. Get cloud, managed and hybrid hosting all backed by Fanatical Support.
Google Drive - Access and sync your files anywhere
Amazon S3 - Amazon S3 is an object storage where users can store data from their business on a safe, cloud-based platform. Amazon S3 operates in 54 availability zones within 18 graphic regions and 1 local region.
Mega - Secure File Storage and collaboration
OnWorks - OnWorks is a free hosting provider that allows to run your workstations only using your web browser.