YACC (Yet Another Compiler Compiler)
YACC stands for Yet Another Compiler Compiler, a tool used in Unix systems for generating parsers, which are components of compilers that process and understand the syntax of programming languages. Developed by Stephen C. Johnson at Bell Labs in the 1970s, YACC takes a formal description of a programming language’s grammar and produces C code for the parser. It has influenced many descendants and equivalents in other languages, serving as a foundational tool in compiler construction and language development.