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Top 12 C++ single-header-lib Projects
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webview
Tiny cross-platform webview library for C/C++. Uses WebKit (GTK/Cocoa) and Edge WebView2 (Windows).
Project mention: Webview – cross-platform HTML5 UI abstraction layer | news.ycombinator.com | 2026-06-16 -
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I see `dotnet watch` being mentioned for code hot reload which is such a great feature for quickly iterating on a game. Not having to restart the whole game just because one has changed a few if statements and values really helps staying in the flow.
But I'm still not too enthusiastic about having GC in C# which is why ideally I'd like to start making a small 2D game just with SDL3 and C++ but how could I get this nice hot reload workflow there? I don't have the money to pay for expensive proprietary tools like https://liveplusplus.tech so what can I do? I guess there's the "game as dynamic library" trick from Handmade Hero (see https://www.youtube.com/shorts/seWAIURXxH0) so maybe that would work good enough? Maybe https://github.com/fungos/cr would do most of what's needed here?
Also, how does one even do modern C++ these days? Is it possible to have big C++ code bases that still compile fast these days? Is CMake 4 good™ now? Are modules really there yet? I rely on clangd as LSP for working with C++ but I read that clangd still fundamentally struggles with C++ modules https://chuanqixu9.github.io/c++/2025/12/03/Clangd-support-f... and it's so bad that there has even been some effort going into making a new C++ LSP https://github.com/clice-io/clice
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matchit.cpp
match(it): A lightweight single-header pattern-matching library for C++17 with macro-free APIs.
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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++ single-header-lib discussion
C++ single-header-lib related posts
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Webview – cross-platform HTML5 UI abstraction layer
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Ported my C game to WASM, here's everybug that I hit
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Much Faster than std::string, fmt::format, std::to_chars, std::time and more?
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C++20 std::format is 2x slower than std::fstream?
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Nanobench: Fast, single-header microbenchmarking functionality for C++
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Shocked by the size of std::bitset
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GUI heavy games - what are my options
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A note from our sponsor - SaaSHub
www.saashub.com | 18 Jun 2026
Index
What are some of the best open-source single-header-lib projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | webview | 14,105 |
| 2 | indicators | 3,391 |
| 3 | tabulate | 2,163 |
| 4 | cr | 1,747 |
| 5 | nanobench | 1,680 |
| 6 | icecream-cpp | 744 |
| 7 | matchit.cpp | 644 |
| 8 | csv2 | 619 |
| 9 | structopt | 507 |
| 10 | imgui_entt_entity_editor | 272 |
| 11 | rapidobj | 219 |
| 12 | Heady | 63 |
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