A cloud based webapps will enable you to access files or applications that you need from the Internet, anytime anywhere, through a web browser or mobile app.
Introducing some of the top cloud based webapps:
Google Docs https://docs.google.com/
With Google Documents, you will have a word processor, a spreadsheet program, and even a program to do PowerPoint presentations, all from online
Google Reader http://www.google.com/reader/
Web-based reader for Atom and RSS feeds to get blogs and news feeds.
Also works for iPhone with MobileRSS
Dropbox http://www.dropbox.com/
Web-based file hosting service uses cloud storage to store and share files and folders with others across the Internet
Also works for iPhone
Xmarks http://www.xmarks.com/
This bookmark synchronizer is an extension for Mozilla Firefox, Internet Explorer, Google Chrome and Apple Safari that synchronizes bookmarks between computers, can also synchronize passwords, open tabs, and browsing history. The bookmark can also access via online.
Zamzar http://www.zamzar.com/
Help to do online file conversion