String and text processing
* conversion/lexical_cast - lexical_cast class template, from Kevlin Henney.
* format - Type-safe 'printf-like' format operations, from Samuel Krempp.
* regex - Regular expression library, from John Maddock
* spirit - LL parser framework represents parsers directly as EBNF grammars in inlined C++, from Joel de Guzman and team.
* tokenizer - Break of a string or other character sequence into a series of tokens, from John Bandela.
* string_algo - String algorithms library, from Pavol Droba