The Boost C++ Libraries are free, open-source, peer-reviewed, portable C++ libraries

Created by experts to be reliable, skillfully-designed, and well-tested.

Proposed for boost.org.

Boost Mission

development of high quality, expert reviewed, legally unencumbered, open-source libraries,
inspiring standard enhancements, and
advancing and disseminating software development best practices.

It does this by fostering community engagement, nurturing leaders, providing necessary financial/legal support, and making directional decisions in the event of Boost community deadlock.

Equally important to our mission is the guidance provided by our shared values. These are transparency, inclusivity, consensus-building, federated authorship, and community-driven leadership.

10M+

Total Downloads

165+

Individual Libraries

Why Use Boost? In a word, Productivity. Use of high-quality libraries like Boost speeds initial development, results in fewer bugs, reduces reinvention-of-the-wheel, and cuts long-term maintenance costs. And since Boost libraries tend to become de facto or de jure standards, many programmers are already familiar with them.

schedule of events

June 2024

June 26, 2024: Boost 1.86.0 closed for new libraries and breaking changes

Release branch is closed for new libraries and breaking changes to existing libraries. Still open for bug fixes and other routine changes to all libraries without release manager review.

July 2024

July 3, 2024: Boost 1.86.0 closed for major changes

Release closed for major code changes. Still open for serious problem fixes and docs changes without release manager review.

July 10, 2024: Boost 1.86.0 closed for beta

Release closed for all changes

July 17, 2024: Boost 1.86.0 beta

Beta posted for download.

July 18, 2024: Boost 1.86.0 open for bug fixes

Release open for bug fixes and documentation updates. Other changes by permission of a release manager.

August 2024

Aug. 7, 2024: Boost 1.86.0 closed

Release closed for all changes

Aug. 14, 2024: Boost 1.86.0 release

Release posted for download.

October 2024

Oct. 23, 2024: Boost 1.87.0 closed for new libraries and breaking changes

Release branch is closed for new libraries and breaking changes to existing libraries. Still open for bug fixes and other routine changes to all libraries without release manager review.

Oct. 30, 2024: Boost 1.87.0 closed for major changes

Release closed for major code changes. Still open for serious problem fixes and docs changes without release manager review.

November 2024

Nov. 6, 2024: Boost 1.87.0 closed for beta

Release closed for all changes

Nov. 13, 2024: Boost 1.87.0 beta

Beta posted for download.

Nov. 14, 2024: Boost 1.87.0 open for bug fixes

Release open for bug fixes and documentation updates. Other changes by permission of a release manager.

December 2024

Dec. 4, 2024: Boost 1.87.0 closed

Release closed for all changes

Dec. 11, 2024: Boost 1.87.0 release

Release posted for download.

library spotlight

All Libraries

Variant2

A never-valueless, strong guarantee implementation of std::variant.

Added in 1.71.0

Boost 1.85.0 closed for all changes on April 3rd

Posted on Mar 17th, 2024 by Louis Tatta

Boost 1.85.0 closed for all changes
When Wednesday, Apr 3, 2024

The 1.85.0 release will close for major changes TOMORROW

Posted on Feb 28th, 2024 by Louis Tatta

Calendar here:
https://www.boost.org/development/

Next deadline:
The master branch will close for the beta next Wednesday.

— The release managers

Review of Parser library begins today

Posted on Feb 19th, 2024 by Louis Tatta

The review of Zach Laine’s proposed Boost.Parser library begins today and will end on February 28th.

From the introduction page of the documentation:

Boost.Parser is a parser combinator library. That is, it consists of a set of low-level primitive parsers, and operations that can be used to combine those parsers into more complicated parsers.

There are primitive parsers that parse epsilon (the empty string), chars, ints, floats, etc.

There are operations which combine parsers to create new parsers.…