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Top 23 C++ cpp23 Projects
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AppSignal
Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
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Project mention: zenkai: The App Launcher I Wrote Because I Wanted Something Fast and Beautiful | dev.to | 2026-10-02
The biggest thing I want is more capabilities. Right now it launches applications and runs things, which is a launcher. What I actually want is closer to what Vicinae and Raycast do, which is a command palette with genuinely useful commands beyond starting processes. Clipboard history, quick calculations, scripts, window and workspace control, that whole category. I use a launcher every single day and the fastest thing on my keyboard right now is starting applications, which is a waste of a good global hotkey. And I do not mean that as a complaint, because the thing already keeps a scorecard of what I actually use it for, so at that point it might as well be funny about it.
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Project mention: C++ Insights – See your source code with the eyes of a Compiler | news.ycombinator.com | 2026-10-01
The tool can be found at - https://cppinsights.io/
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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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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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mp-units
The Domain-Correct Quantities and Units Library for C++ — full quantity kind safety, ISO 80000 compliant, C++29 standardization candidate.
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Project mention: Show HN: C/C++ Cheatsheet – a modern, practical reference for C and C++ | news.ycombinator.com | 2026-01-22
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mcpp
A modern C++ module-first build tool — written in pure C++23 modules, fully self-hosted (by mcpp-community)
Project mention: Show HN: Modern C++ Build Tools for Module Feature | news.ycombinator.com | 2026-08-07 -
SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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++ cpp23 discussion
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Show HN: Modern C++ Build Tools for Module Feature
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Show HN: Pushing a non-blocking C++ web server to 58k req/SEC using kqueue
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Rewriting a FIX Engine in C++23: What Got Simpler (and What Didn't)
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Rewriting a FIX Engine in C++23: What Got Simpler (and What Didn't)
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A note from our sponsor - AppSignal
www.appsignal.com | 16 Oct 2026
Index
What are some of the best open-source cpp23 projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | shadPS4 | 33,642 |
| 2 | Modern-CPP-Programming | 16,220 |
| 3 | vicinae | 10,261 |
| 4 | doctest | 6,890 |
| 5 | cppinsights | 4,682 |
| 6 | zrythm | 3,152 |
| 7 | thread-pool | 3,066 |
| 8 | giada | 2,101 |
| 9 | cpp | 1,669 |
| 10 | mp-units | 1,488 |
| 11 | saucer | 948 |
| 12 | liblava | 883 |
| 13 | obfuscator | 860 |
| 14 | real-time-cpp | 813 |
| 15 | icecream-cpp | 750 |
| 16 | aitoolkit | 524 |
| 17 | mdspan | 509 |
| 18 | paper-muncher | 307 |
| 19 | cppcheatsheet | 291 |
| 20 | crtsys | 203 |
| 21 | librapid | 179 |
| 22 | cplusplus | 164 |
| 23 | mcpp | 158 |
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