Boost C++ Libraries of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for a snapshot of the develop branch, built from commit 4e820d5a5a.


Christopher Kohlhoff

Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at

Boost.Asio is a cross-platform C++ library for network and low-level I/O programming that provides developers with a consistent asynchronous model using a modern C++ approach.


An overview of the features included in Boost.Asio, plus rationale and design information.

Using, Building, and Configuring Boost.Asio

How to use Boost.Asio in your applications. Includes information on library dependencies and supported platforms.


A tutorial that introduces the fundamental concepts required to use Boost.Asio, and shows how to use Boost.Asio to develop simple client and server programs.


Examples that illustrate the use of Boost.Asio in more complex applications.


Detailed class and function reference.

Networking TS Compatibility

Description of changes to provide compatibility with the "C++ Extensions for Networking" Technical Specification.

Proposed Standard Executors

Description of Boost.Asio's support for the proposed standard executors library.

Revision History

Log of Boost.Asio changes made in each Boost release.


Book-style text index of Boost.Asio documentation.