An incremental parsing system for programming tools
A whole-program optimizing compiler for Standard ML
Parser generator, targetting C, C++, Python, JavaScript, JSON and XML
A fast JSON parser/generator for C++ with both SAX/DOM style API
Another C++ based JSON Library (/w Parser/Generator/Navigator)
C#Prolog -- A Prolog interpreter written in managed C#
A multi-language port of Browserscope's user agent parser
Object Oriented Parser Generator
UML 2 Statemachine for C++ is a development framework with DSL support