Microsoft Windows Live SkyDrive
SkyDrive is Microsoft's Windows Live cloud storage service that lets users store files and access them from a Web browser. Users can upload documents, files, photos, video and other media on PCs or Macs or Web-enabled mobile devices. SkyDrive gives users up to 25 GB of cloud storage for free and files stored to SkyDrive can be shared via e-mail or to groups.
SkyDrive's key differentiator is the ability to create, edit, view and share Office Web Apps.
Microsoft also recently updated SkyDrive so it leverages HTML5 and moves more swiftly. Microsoft also made it more consistent with Hotmail and added support for file uploads of up to 100 MB, double the old 50-MB limit.