Top 20 C++ cpp17-library Projects

cpp17-library

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1. Elements C++ GUI library

   1 13 3,713 4.4 C++

   Elements C++ GUI library

   

2. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

3. matchit.cpp

   2 7 644 0.0 C++

   match(it): A lightweight single-header pattern-matching library for C++17 with macro-free APIs.

   

4. alpaca

   3 5 561 6.9 C++

   Serialization library written in C++17 - Pack C++ structs into a compact byte-array without any macros or boilerplate code (by p-ranav)

   

5. stlkrn

   4 2 435 3.4 C++

   C++ STL in the Windows Kernel with C++ Exception Support

   

6. lwlog

   5 15 350 5.3 C++

   Very fast synchronous and asynchronous C++17 logging library

   

   Project mention: Lwlog 1.5.0 Released | news.ycombinator.com | 2025-12-27

7. text

   6 10 336 6.3 C++

   A spicy text library for C++ that has the explicit goal of enabling the entire ecosystem to share in proper forward progress towards a bright Unicode future. (by soasis)

   

8. eventbus

   7 0 210 4.7 C++

   A simple, header only event bus library written in modern C++17. (by ptsouchlos)

   

9. monolish

   8 1 201 6.7 C++

   monolish: MONOlithic LInear equation Solvers for Highly-parallel architecture

   

10. homog2d

    9 1 138 4.1 C++

    C++ 2D geometry library, handles points, lines, polylines, planar transformations (and other primitives), using homogeneous coordinates. Provided with complete manual and samples.

    

11. librapidarchive

    10 1 87 7.4 C++

    Fast parallel random access to bzip2 and gzip files in Python

    

12. mathiu.cpp

    11 1 81 3.6 C++

    mathiu : a simple computer algebra system in C++.

    

13. liblifthttp

    12 1 77 6.0 C++

    Safe and easy to use C++17 HTTP client library.

    

14. BitLib

    13 2 75 8.0 C++

    Provides a bit-vector, an optimized replacement of the infamous std::vector<:b:ool>. In addition to the bit-vector, the library also provides implementations of STL algorithms tailored for bit-vectors.

    

15. idk

    14 1 40 8.0 C++

    The IDK (Industrial Development Kit) library! (by soasis)

    

    Project mention: The Cost of a Closure in C: The Rest | news.ycombinator.com | 2026-01-03

    Actually the author is building onto my suggestion https://github.com/soasis/idk/pull/17/files which I created several years ago, but adapted a bit too fast while submitting. And yes it looks very similar to GNU nested functions, since I started tinkering with these first.

    I am really not sure if all these observations mentioned in the article are 100% correct, though.

    First : Code seems to be compiled with clang. On Linux with gcc the native function one is way faster than the clang one.

    Second: The author does run the code on ARM64/MacOS .

    At least on my ryzen CPU on Linux with gcc the "normal C code" is way faster than anything else. Not that we do not need to thing about "closure" type functionality, but one should be careful to extrapolate implementations from one compiler on one platform to the rest of the pack.

    Regarding N3654 I am not sure how to benchmark it here, since C could potentially use __builtin_call_with_static_chain , but I am not sure how to write the function to use the chain for accessing the variables.

    I tried to estimate N3654 it by using "tinygo" which is AFAIK using the usual Calling ABI, but it was a factor of two slower than clang. Even "go" with its very specific ABI is still much slower. I discovered this isn't representative since runtime calling costs had been totally shadowed by costs of allocations.

    Even the rust example I am usually using http://www.reddit.com/r/rust/comments/2t80mw/the_man_or_boy_... is much slower than anything else, presumably because of the "Cell" needed

    TLDR: This micro benchmark might be misleading

16. gaenari

    15 1 29 0.0 C++

    c++ incremental decision tree

    

17. MoveDetect

    16 2 17 3.2 C++

    Library to detect whether movement can be detected between two images or video frames.

    

18. dynarray

    17 2 15 3.3 C++

    A header-only library, VLA for C++ (≥C++14). Extended version of std::experimental::dynarray

    

19. nesdev

    18 3 11 1.8 C++

    NesDev is a modular cycle-accurate NES emulator development toolkit for C++.

    

20. static_string

    19 0 9 2.7 C++

    Experimental compile-time string manipulation C++17 library

    

21. friendly-cli

    20 1 3 0.0 C++

    A modern C++ library for Linux that provides an easy-to-use API for user interaction through CLI

    

C++ cpp17-library related posts

• Rapidgzip – Parallel Decompression and Seeking in Gzip (Knespel, Brunst – 2023) [pdf]

  3 projects | news.ycombinator.com | 21 Aug 2023

• uni-algo v1.0.0: Modern Unicode Library

  6 projects | /r/cpp | 7 Jul 2023

• Can I include cycfi/elements with CMake in any project or must I build up on example projects?

  1 project | /r/cpp_questions | 8 Jan 2023

• Can I include cycfi/elements with CMake in any project or must I build up on example projects?

  1 project | /r/cpp | 8 Jan 2023

• A simple problem that isn't

  3 projects | /r/programming | 5 Jan 2023

• Pack C++ structs into a compact bytearray without any macros or boilerplate code

  1 project | news.ycombinator.com | 26 Nov 2022

• Code review request

  1 project | /r/cpp_questions | 17 Oct 2022
• A note from our sponsor - SaaSHub
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