Ox is an attribute grammar compiling system that augments Lex and Yacc specifications with definitions of synthesized and inherited attributes written in a combination of Ox and C/C++ syntax. From these augmented specifications, Ox generates ordinary Lex and Yacc specifications that build and decorate attributed parse trees.
The user can specify parse-tree traversals for easy ordering of side effects such as code generation. Ox handles the tedious and error-prone details of writing code...
Front provides a compiler front end generator that can generate a parser, pretty printer, symbol table handling, and Abstract Syntax Tree data structures and traversals. It also provides a C preprocessor library, and an AST rewriter generator.
Dapar is a universal parsing library written in C. It will interpret any grammar you give it in a BNF-like format, and constructs a matching expression tree for any given input. This makes developing a new parser for any language simple and reliable.
Includes an ABNF parser, EBNF parser, XML parser and algebraic math parser.