Facebook SDKs enable you to pass app event data from your app to Facebook. With app event data, you can accurately track and measure the actions people take in your app.
Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
Hypertext Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. It can be assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScript.