libstudxml is a streaming XML pull parser and streaming XML serializer implementation for modern, standard C++. It has an API which the authors believe should have already been in Boost or even in the C++ standard library. It is compact, external dependency-free, and reasonably efficient. The XML parser is a conforming, non-validating XML 1.0 implementation which is based on tested and proven code.
UniCC, (Universal Compiler-Compiler) is a powerful LALR(1) parser generator and language development system for computer professionals. It serves as an all-round design and build tool assisting compiler writers in any parsing-related task, including production quality compiler construction and the implementation of domain specific languages. It unifies an integrated generator for lexical analyzers and a powerful LALR(1) parser generator into one software solution. The programming interface is a rich, extendable, and innovative BNF-based grammar definition language for expressing context-free grammars.
Yap4j is the simplest library for parsing CSV files in Java. It deserializes CSV files into a list of POJOs using a set of Java annotations, while allowing you to specify Object-CSV mappings. It automatically converts to and from a wide range of data types, and includes support for types from popular libraries such as Joda Time, and support for custom record delimiters.