Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC).

LLVM is a collection of libraries and tools that make it easy to build compilers, optimizers, just-in-time code generators, and many other compiler-related programs.

The runtime is the part of the OpenMP implementation that your code is linked against, and that manages the multiple threads in an OpenMP program while it is executing.

libunwind is a production-quality unwinder, with platform support for DWARF unwind info, SjLj, and ARM EHABI.

QGIS is a Geographic Information System (GIS) which manages, analyzes and display databases of geographic information.

clangd understands your C++ code and adds smart features to your editor: - code completion - compile errors - go-to-definition - and more.