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Top 23 Cpp17 Open-Source Projects
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modern-cpp-tutorial
📚 Modern C++ Tutorial: C++11/14/17/20 On the Fly | https://changkun.de/modern-cpp/
Project mention: Modern C++ Tutorial: C++ 11/14/17/20 On the Fly | news.ycombinator.com | 2026-05-28 -
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Minetest
Luanti (formerly Minetest) is an open source voxel game-creation platform with easy modding and game creation
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There is an issue on their GitHub relating to customisable contraction hierarchies, but it doesn't seem to have gotten much interest.
https://github.com/Project-OSRM/osrm-backend/issues/6574
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Magic Enum C++
Static reflection for enums (to string, from string, iteration) for modern C++, work with any enum type without any macro or boilerplate code
Project mention: Magic Enum C++: Header-only C++17 library provides static reflection for enums | news.ycombinator.com | 2026-06-04 -
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sol2
Sol3 (sol2 v3.0) - a C++ <-> Lua API wrapper with advanced features and top notch performance - is here, and it's great! Documentation:
Interesting, I don't find modern C++ verbose at all. 'auto', range-based for-loops and structured bindings did a great job at reducing the verbosity of C++98.
On top of that, C++ allows to design very concise APIs. (One of my favorite examples is sol2: https://github.com/ThePhd/sol2).
Library code involving templates, on the other hand, can be pretty complex and hard to read. Concepts and other C++20 features (like [[no_unique_address]]) are certainly an improvement, but only new projects with no backwards compatibility requirements can actually use them (unconditionally).
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Project mention: Canvas_ity: A tiny, single-header <canvas>-like 2D rasterizer for C++ | news.ycombinator.com | 2026-02-21
that's a common pattern in C++ land because there is no standard way to use libraries in C++
https://github.com/p-ranav/awesome-hpp
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Other examples are CTRE (https://github.com/hanickadot/compile-time-regular-expressio...) and format string compilation (https://fmt.dev/12.0/api/#compile-api). The closest C counterpart is re2c which also requires external tooling.
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We are using nanobind paired with hatch & scikit-build.
I suggest having a look at the pyproject and src/faebryk/core/cpp.
[0] https://github.com/wjakob/nanobind
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xray-16
Improved version of the X-Ray Engine, the game engine used in the world-famous S.T.A.L.K.E.R. game series by GSC Game World. Join OpenXRay! ;)
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Regarding other ports, I've also been pretty happy with https://github.com/nodeca/argparse, which works nicely from Typescript. Looks like it hasn't been updated for a while, but it's not like there's a great deal wrong with it.
https://github.com/p-ranav/argparse is a single-file argparse for Modern C++, which means it's typically straightforward, if baffling in places and a bit annoying to step through in the debugger.
The nice thing about the argparse ports is that provided they take their job seriously, your programs will all end up with a vaguely consistent command line UX in terms of longopt syntax, and, importantly, a --help page.
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Tendis
Tendis is a high-performance distributed storage system fully compatible with the Redis protocol.
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thread-pool
BS::thread_pool: a fast, lightweight, modern, and easy-to-use C++17 / C++20 / C++23 thread pool library
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Project mention: Quill: Asynchronous Low Latency C++ Logging Library | news.ycombinator.com | 2025-09-14
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Project mention: Came across the async framework userver 3.0 recently – they've moved to C++20 | news.ycombinator.com | 2026-05-28
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).
Cpp17 discussion
Cpp17 related posts
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fast_float VS str2num - a user suggested alternative
2 projects | 6 Jun 2026 -
U++ – Cross-Platform App Development Framework
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Modern C++ Tutorial: C++ 11/14/17/20 On the Fly
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Came across the async framework userver 3.0 recently – they've moved to C++20
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I built a Modern Terminal Text Editor
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Show HN: Nova v1.5.0 Gold Master – A pure C++17 assistant with zero dependencies
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Show HN: Pnana – A Modern Terminal Text Editor Built for Simplicity and Power
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A note from our sponsor - SaaSHub
www.saashub.com | 7 Jun 2026
Index
What are some of the best open-source Cpp17 projects? This list will help you:
| # | Project | Stars |
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| 1 | modern-cpp-tutorial | 25,430 |
| 2 | modern-cpp-features | 21,718 |
| 3 | Modern-CPP-Programming | 15,712 |
| 4 | awesome-modern-cpp | 12,995 |
| 5 | Minetest | 12,945 |
| 6 | entt | 12,753 |
| 7 | flecs | 8,370 |
| 8 | Open Source Routing Machine (OSRM) | 7,775 |
| 9 | doctest | 6,749 |
| 10 | Magic Enum C++ | 6,100 |
| 11 | libcimbar | 6,060 |
| 12 | sol2 | 5,059 |
| 13 | cppinsights | 4,492 |
| 14 | awesome-hpp | 4,115 |
| 15 | compile-time-regular-expressions | 3,810 |
| 16 | Elements C++ GUI library | 3,697 |
| 17 | nanobind | 3,551 |
| 18 | xray-16 | 3,500 |
| 19 | argparse | 3,441 |
| 20 | Tendis | 3,143 |
| 21 | thread-pool | 2,997 |
| 22 | quill | 2,921 |
| 23 | userver | 2,907 |
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