The organization of boost integer headers and classes is designed to take advantage of <stdint.h> types from the 1999 C standard without resorting to undefined behavior in terms of the 1998 C++ standard. The header <boost/cstdint.hpp> makes the standard integer types safely available in namespace boost without placing any names in namespace std.

Function object wrappers for deferred calls or callbacks.

Regular expression library.

Safe, generic, stack-based discriminated union container.

LL parser framework represents parsers directly as EBNF grammars in inlined C++.

Serialization for persistence and marshalling.

General literal text conversions, such as an int represented a string, or vice-versa.

A rational number class.

Useful time utilities. C++11.

Memory pool management.

The Boost Multi-index Containers Library provides a class template named multi_index_container which enables the construction of containers maintaining one or more indices with different sorting and access semantics.