C# (pronounced see sharp) is a multi-paradigm programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming disciplines. wikipedia.org

Is a platform for web and mobile application. wikipedia.org

Android is an operating system based on the Linux kernel with a user interface based on direct manipulation, designed primarily for touchscreen mobile devices such as smartphones and tablet computers. wikipedia.org

The Qualcomm Vuforia mobile vision platform enables augmented reality and interactive 2D and 3D mobile content. wikipedia.org

Virtual reality replicates an environment that simulates a physical presence in places in the real world or an imagined world, allowing the user to interact with that world. wikipedia.org

Unity is an integrated authoring tool for creating 3D video games or other interactive content such as architectural visualizations or real-time 3D animations. wikipedia.org

Augmented reality (AR) is a live, direct or indirect, view of a physical, real-world environment whose elements are augmented by computer-generated sensory input such as sound, video, graphics or GPS data. wikipedia.org