C++ Standard Libraries

Open-source C++ projects categorized as Standard Libraries
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Top 3 C++ Standard Library Projects

Standard Libraries

  1. STL

    MSVC's implementation of the C++ Standard Library.

    Project mention: C++ String Conversion: Exploring std:from_chars in C++17 to C++26 | news.ycombinator.com | 2024-10-14

    I believe the impl you link to is not fully standards compliant, so just calls back to

    MSFT's one is totally standards compliant and it is a very different beast: https://github.com/microsoft/STL/blob/main/stl/inc/charconv

    Apart from various nuts and bolts optimizations (eg not using locales, better cache friendless, etc...) it also uses a novel algorithm which is an order of magnitude quicker for many floating points tasks (https://github.com/ulfjack/ryu).

    If you actually want to learn about this, then watch the video I linked earlier.

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  3. EA Standard Template Library

    EASTL stands for Electronic Arts Standard Template Library. It is an extensive and robust implementation that has an emphasis on high performance.

    Project mention: China Is Rapidly Becoming a Leading Innovator in Advanced Industries | news.ycombinator.com | 2024-09-16

  4. CIDLib

    The CIDLib general purpose C++ development environment

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

C++ Standard Libraries discussion

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C++ Standard Libraries related posts

  • C++ String Conversion: Exploring std:from_chars in C++17 to C++26

    4 projects | news.ycombinator.com | 14 Oct 2024

  • China Is Rapidly Becoming a Leading Innovator in Advanced Industries

    2 projects | news.ycombinator.com | 16 Sep 2024

  • Driving Compilers

    1 project | news.ycombinator.com | 29 Jul 2024

  • Show HN: Logfmtxx – Header only C++23 structured logging library using logfmt

    3 projects | news.ycombinator.com | 3 Apr 2024

  • Cpp2 and cppfront – An experimental 'C++ syntax 2' and its first compiler

    7 projects | news.ycombinator.com | 31 Mar 2024

  • Sane C++ Libraries

    7 projects | news.ycombinator.com | 27 Jan 2024

  • C++ Specification vs Implementation

    3 projects | /r/cpp_questions | 19 Nov 2023
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    coderabbit.ai | 15 Mar 2025
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Index

What are some of the best open-source Standard Library projects in C++? This list will help you:

# Project Stars
1 STL 10,460
2 EA Standard Template Library 8,534
3 CIDLib 208

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