iOnRoad is a free augmented reality driving safety app. It received the International CES 2012 innovation award.The program uses the GPS feature, gyroscope and video camera stream of the native mobile device to monitor a vehicle’s position on the road, alerting drivers of lane departures and potential collisions with audio and visual cues.iOnRoad has been downloaded by over 500,000 people (from wikipedia).
Qt is a cross-platform application development framework for desktop, embedded and mobile. Supported Platforms include Linux, OS X, Windows, VxWorks, QNX, Android, iOS, BlackBerry, Sailfish OS and others.
Qt is not a programming language by its own. It is a framework written in C++. A preprocessor, the MOC (Meta-Object Compiler), is used to extend the C++ language with features like signals and slots. Before the compilation step, the MOC parses the source files written in Qt-extended C++ and generates standard compliant C++ sources from them. Thus the framework itself and applications/libraries using it can be compiled by any standard compliant C++ compiler like Clang, GCC, ICC, MinGW and MSVC (taken from https://wiki.qt.io/About_Qt)
SoundCloud is a Swedish online audio distribution platform based in Berlin, Germany, that enables its users to upload, record, promote, and share their originally-created sounds. According to the company’s data, in December 2014, the service attracts more than 175 million unique monthly listeners, while content creators upload about 12 hours worth of audio every minute. Founders Alexander Ljung and Eric Wahlforss are the chief executive officer (CEO) and chief technical officer (CTO), respectively (From Wikipedia).