6 cloud storage companies

Box

Aaron Levie, CEO

Capacity: 5 GB free; 25 GB for $9.99/month

What it's for: Collaboration

Killer feature: Users can brand Box-powered projects with their own logos and color schemes

Funding: $287 million

Number of users: 11 million

Fun fact: Levie is an amateur magician

Dropbox

Drew Houston, CEO

Capacity: 2 GB free; 100 GB for $10/month

What it's for: Backups

Killer feature: Syncs folders automatically on several devices

Funding: $257 million

Number of users: 50 million

Fun fact: will.i.am is a fan

YouSendIt

Brad Garlinghouse, CEO

Capacity: 2 GB free; 5 GB for $9.99/month

What it's for: Sending files

Killer feature: Send massive files with return receipts and download tracking

Funding: $48.7 million

Number of users: 34 million

Fun fact: U sed to produce Sesame Street

SugarSync

Laura Yecies, CEO

Capacity: 5 GB free; 60 GB for $9.99/month

What it's for: Backups

Killer feature: Accessible on all operating systems and platforms

Funding: $51.5 million

Number of users: 25 million

Fun fact: Popular with the Cannes set

Google Drive

Scott Johnston, product head

Capacity: 5 GB free; 200 GB for $9.99/month

What it's for: Documents

Killer feature: Open and edit files from within a browser window

Funding: Not applicable

Number of users: 10 million

Fun fact: Larry Page is a user, natch

Microsoft SkyDrive

Chris Jones, corporate VP, Windows Live

Capacity: 7 GB free; 20 GB for $10/year

What it's for: Documents

Killer feature: Access files stored on a home PC from anywhere

Funding: Not applicable

Number of users: 60 million

Fun fact: No fun fact available

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