mcxxMercurium is a C/C++/Fortran source-to-source compilation infrastructure aimed at fast prototyping developed by the Programming Models group at the Barcelona Supercomputing Center
com2annTool for translation type comments to type annotations in Python
mythonThe Mython extensible variant of the Python programming language.
flextoolC++ compile-time programming (serialization, reflection, code modification, enum to string, better enum, enum to json, extend or parse language, etc.)
clavaC/C++ Source-to-Source Tool based on Clang