Mozilla Text Preprocessor

The C preprocessor implements the macro language used to transform C, C++, and Objective-C programs before they are compiled. It can also be useful on its own.

GNU M4 is an implementation of the m4 macro preprocessor. Developed by the GNU Project, GNU M4 is designed to avoid many kinds of limits found in traditional m4 implementations, …

gema is a general purpose text processing utility based on the concept of pattern matching. In general, it reads an input file and copies it to an output file, while …

filepp is a generic file preprocessor. It is designed to allow the functionality provided by the C preprocessor to be used with any file type. filepp supports the following keywords, …

GPP is a general-purpose preprocessor with customizable syntax, suitable for a wide range of preprocessing tasks. Its independence from any one programming language makes it much more versatile than the …

A variation on the C preprocessor that (1) works on multiple languages and (2) encodes preprocessor statements as comments in that language so syntax correctness is not broken.