Appium is an open source free Automation Mobile App Tool.Automate Native apps, Hybrid apps and Mobile Web browser Automation.Drives Android , IOS and Windows based Apps.With the help of WebDriver Protocol. Appium is a Cross Platform ,you can write the test scripts against Multiple Platforms with the same API,IOS + ANDROID + WINDOWS.
Before jump into Appium Introduction,we should learn some concepts about Mobile Apps types in the market.Three types of Mobile Apps are their in market,those are
Native Apps : Developed using IOS , Android & Windows SDK Platforms.
Examples : Facebook , What’s Up , Times of India etc.
Hybrid Apps : Hybrid apps are part of Native Apps and Web Apps , it is a wrapper of web View.Hybrid apps build wrapper for already developed Web Sites.