Linux, BSD, Windows, AIX, OSX, QNX, VxWorks, JVM, CLR, Oracle, SQL Server, IBM DB2, MySQL, SAP, Exchange Server, Apache Web Server, IIS, GNOME, KDE, QNX, GCC, LLVM/Clang, Intel Compilers, Microsoft Compilers, Visual Studio, Chrome, Firefox, IE, Safari, OpenGL, DirectX, OpenCL, CUDA, VMware, Hyper-V, Citrix Software, Cisco Software, Adobe Software, Autodesk Software, Microsoft Office, OpenOffice/LibreOffice, Amazon, Bloomberg, Google Search Engine, Catia, almost all the game/3D engines...
és persze az INTEGRITY-178B RTOS (the OS of Airbus A380, Boeing 787 and of course B-2, F-22 and F-35), Next Generation Air Transportation System (NGATS)...
elég?
ha nem akkor:
"The current stable version of GCC is 4.7.2, which was released on September 20, 2012. GCC now uses C++ as its implementation language."
Szóval már nem is C hanem C++ :)