dropbox

Dropbox is a Web-based file hosting service operated by Dropbox, Inc. that uses cloud storage to enable users to store and share files and folders with others across the Internet using file synchronization. It was founded in 2007 by MIT graduates Drew Houston and Arash Ferdowsi as a Y Combinator startup.

There are both free and paid services, each with varying options. In 2011 Dropbox also announced "Dropbox for Teams", a Dropbox service focused towards businesses and collaborative teams providing administrative control, central billing etc. Dropbox for Teams is still hosted on the web but has different pricing model. In comparison to similar services, Dropbox offers a relatively large number of user clients across a variety of desktop and mobile operating systems. There are a number of versions across many operating systems, including versions for Microsoft Windows, Mac OS X, and Linux (official and unofficial), as well as versions for mobile devices, such as Android, Windows Phone 7, iPhone, iPad, WebOS, and BlackBerry, and a web-based client for when no local client is installed. Dropbox uses the freemium financial model and its free service provides 2 GB of free online storage. Users who refer Dropbox to others can gain up to 8 GB of additional free storage. The service's major competitors include Box.net, FilesAnywhere, CloudMe, CrashPlan, Egnyte, iCloud, Mozy, SpiderOak, SugarSync, TitanFile, Ubuntu One, Windows Live SkyDrive, Wuala and ZumoDrive.

http://www.dropbox.com/