Offline Apps use

The idea of offline Web applications is actually earlier than HTML5, and some of them are implemented earlier. In other words, HTML5 has a way to achieve offline, but there are other ways. I will talk about one of these methods later in this chapter: Gears. Some of these early adopters have been replaced with HTML5, and others are switching.
Gmail,google Web-based mailbox
Zoho, online productivity and co-operative applications productivity and collaboration apps
remember the Milk, online mission management system
WordPress, an open-source personal publishing platform

Offline Apps use