XNA is a cross-platform framework originally from Microsoft that facilitates game development with .NET. Supports: Windows, Xbox 360, Windows Phone (natively), Silverlight (via SilverSprite or Exen), iPhone/iPad, Android, Mac OS X, Linux and others (via MonoGame).

An open-source test automation tool for use with native and hybrid mobile apps

WebKit is an open-source Web content engine for browsers and other applications, such as Apple Safari, Mail, App Store and several mobile browsers including the pre-installed browsers for Android, iOS, RIM Blackberry, Symbian, and WebOS.

Commonly, you should use this tag IN ADDITION TO the tag for the specific type of add-on which you are asking about. At this point, the most common is firefox-addon-webextensions for WebExtensions based add-ons. A Firefox add-on is a way of adding to or modifying the Firefox web browser. Most commonly, questions in this tag are about Firefox extensions, which add new functionality to the browser, although "add-on" may also refer to themes or plugins.

Part of the Android API. A View that displays web pages. This class is the basis upon which you can roll your own web browser or simply display some online content within your Activity.

A "pivot table" is a method of summarizing data in tabular form. Typically, these have a category column in the left hand side, and multiple summary columns to the right. Each different category will have its own row.

Google Cloud Messaging is a service to allow data to be sent remotely to Android and iOS applications and Chrome extensions and packaged apps.

A progress bar is a component in a graphical user interface used to convey the progress of a task, such as a download or file transfer.

Retrofit2 is the second version of the type-safe REST client Retrofit for Android and Java. It is developed by Square, Inc.

Combination of several programming symbols and values intending to produce a result

For questions about CloudFormation, part of the Amazon Web Services (AWS) that provides a way to manage a collection of related AWS resources.