Kayacc
A Compiler Development Toolkit
...It includes a BNF compiler that generates parsers for context free grammars, and a class library to support compiler development.
The class library supports symbol tables, Unicode text manipulation, reserved word mappings, and translating between Unicode and byte oriented encodings.
Tombo is an alternative for lex, yacc and Bison tools.
Source can be browsed in git/code repository or src directory.
Send e-mail to tombo@gekkoware.com for support