However, file sharing can only be set up through Drive's Web interface, not the desktop client. You can, though, use the client to easily distribute a file's link to Google contacts and groups (assuming Google is what you use to manage your contacts).
Files created and stored in Google Docs can also be synced to your Drive folders, although you can elect not to sync selected subfolders in Drive. Documents saved in Drive can also be opened as Google Docs documents, if Docs supports the format in question. Note that files converted into Google Docs-compatible formats aren't counted towards the storage total.
5GB Free account max file size: 10GB Paid account storage space: 25GB ($2.49/month); 100GB ($4.99/month); various other plans up to 16TB ($799.99/month) Paid account max file size: 10GB File storage expiration: None Other paid options: None Time to upload 100MB file: 6 min. 55 sec.
A still-evolving service (the company doesn't offer a paid tier yet), Minus allows signup via Facebook or Twitter and has browser extensions for both Chrome and Firefox that allow fast uploading of images and content.
Apart from allowing files to be shared for download, most of Minus's features seem geared towards Tumblr/Pinterest-like social sharing, not professional use. Users can follow each other and see feeds of newly uploaded content, which can be organized into publicly browse-able categories. Sharing is limited mostly to making a link public and manually distributing it.
The desktop client works as both a drag-and-drop uploader and a remote management tool for your stored files. It also has the ability to snap and upload screenshots. One handy function of the browser add-on: You can take a snapshot of a whole Web page and upload it.
10GB (up to 50GB as reward for recruiting other members) Free account max file size: 1GB Paid account storage space: None Paid account max file size: N/A File storage expiration: None Other paid options: N/A Time to upload 100MB file: 6 min. 50 sec.
Microsoft's SkyDriveClick to view larger image.
Part of the Microsoft Live family of services, SkyDrive provides client apps for Windows and Mac that sync to and from folders on a client machine. Drag-and-drop uploading through Web browsers is also supported, but only for individual files and not whole folders; to do the latter you need to use the client software.