WEB

          From Wikipedia, the free encyclopedia in computing or web app is a client-server software application which the client  (or user interface) runs in a web browser.

          Web applications are popular due to the ubiquity of web browsers, and the convenience of using a web browser as a client to update and maintain web applications without distributing and installing software on potentially thousands of client computers is a key reason for their popularity, as is the inherent support for cross-platform compatibility. Common web applications include web-mail, online retail sales, online auctions, wikis, instant messaging services and many other functions.