Top 23 C++ header-only Projects
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You can use JSON as the intermediate datastructure for serializing and de-serializing (https://github.com/nlohmann/json).
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Catch
A modern, C++-native, header-only, test framework for unit-tests, TDD and BDD - using C++11, C++14, C++17 and later (or C++03 on the Catch1.x branch)
https://github.com/catchorg/Catch2/blob/devel/docs/cmake-integration.md#automatic-test-registration
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Scout APM
Scout APM - Leading-edge performance monitoring starting at $39/month. Scout APM uses tracing logic that ties bottlenecks to source code so you know the exact line of code causing performance issues and can get back to building a great product faster.
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Project mention: Presenting a C++ project on Github elegantly | reddit.com/r/cpp_questions | 2021-05-07
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I haven't used any of the following libraries/frameworks but maybe some of them will fit for your needs: - Crow micro web framework
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You can get source code here
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I'm in the process of developing a game using entt to implement ecs, since I've heard that it can help with performance by optimizing memory packing / cache hit rate.
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It seems https://github.com/g-truc/glm also supports SIMD (at least if used / configured correctly).
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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If you need an embedded C++ HTTP server then there are plenty of libraries/frameworks (in random order): Crow, RESTinio, Boost.Beast, cpp-httplib, http_backend, Pistache, RestBed, served, proxygen, Simple-Web-Server, drogon, oat++.
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Project mention: Python 3 Types in the Wild: A Tale of Two Type Systems [pdf] | news.ycombinator.com | 2021-04-14
Even aside from deliberate backwards-compatibility breaks in the standard, compilers sometimes break compatibility. Both MSVC and GCC 11 have changed their header file transitive includes within the past few years, causing projects (like doctest and Qt5) to stop compiling because they forgot to include headers, which built fine in the past but not anymore. IDK if it's "very common", but it's definitely happening in the wild.
MSVC: https://github.com/onqtam/doctest/issues/183
GCC:
- https://invent.kde.org/qt/qt/qtbase/-/commit/8252ef5fc6d0430...
- https://invent.kde.org/qt/qt/qtbase/-/commit/cb2da673f53815a...
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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: I made a new enum implementation for C++ that should simulate stateful enums. Any feedback and improvements is welcome. (Due to macro problems, doesn't work on msvc correctly) | reddit.com/r/cpp | 2021-05-21Anyway, have you tried https://github.com/Neargye/magic_enum ? How is you implementation different?
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compile-time-regular-expressions
A Compile time PCRE (almost) compatible regular expression matcher.
There is also https://github.com/hanickadot/compile-time-regular-expressions that is written by one of the cpp committee and is meant to be almost as fast burntsushi's regex lib.
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Project mention: It there a library for creating a progress bar? | reddit.com/r/cpp_questions | 2021-03-31
Maybe this one: https://github.com/p-ranav/indicators
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As idiomatic, I will try to adopt as much as possible purely functional programming in C++ by using https://github.com/Dobiasd/FunctionalPlus . Do you have by any chance any alternative suggestion?
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uvw
Header-only, event based, tiny and easy to use libuv wrapper in modern C++ - now available as also shared/static library!
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Project mention: Simple `struct` static reflection system I use that tracks names, attributes (in my own code I also keep `constexpr` hashes of names) -- example gets fully inlined into `main()` | reddit.com/r/cpp | 2021-04-24
And then there's also the longstanding issue with default member initializers -- https://github.com/boostorg/hana/issues/409 -- which was a deal-breaker.The PROP system avoids this issue precisely by having the macro be as local as possible: the default member initializer is outside the macro. It does this while still letting you attach additional PropAttribs metadata (I'm not sure what additional metadata attachment looks like in Hana? haven't really tried). Default values and additional attributes are by and large quite more important to me in my use cases for reflection (component types in game ECS) than range syntax (everything I've needed and can think of needing is covered by for-each loop).
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Project mention: Fastest way to read very large file(Gb to Tb) in C++ | reddit.com/r/cpp | 2021-05-19
I would memory map it. Use this lib: https://github.com/mandreyel/mio
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Nameof C++
Nameof operator for modern C++, simply obtain the name of a variable, type, function, macro, and enum
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Project mention: Fast And Memory Efficient C++ Hashtable Based On Robin Hood Hashing | reddit.com/r/programming | 2021-05-23
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Project mention: Looking for a codegen library that uses C++ for scripting | reddit.com/r/cpp | 2021-03-10
I've looked into a newer template engine like Inja, but my client isn't quite happy with that either. Inja allows you to write templates that you feed JSON data into:
Index
What are some of the best open-source header-only projects in C++? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | json | 24,838 |
| 2 | Catch | 13,469 |
| 3 | spdlog | 11,796 |
| 4 | Crow | 6,353 |
| 5 | GuiLite | 5,497 |
| 6 | entt | 5,276 |
| 7 | GLM | 5,209 |
| 8 | cpp-httplib | 5,086 |
| 9 | doctest | 3,318 |
| 10 | Magic Enum C++ | 1,916 |
| 11 | compile-time-regular-expressions | 1,905 |
| 12 | indicators | 1,599 |
| 13 | FunctionalPlus | 1,374 |
| 14 | PEGTL | 1,345 |
| 15 | uvw | 1,266 |
| 16 | hana | 1,239 |
| 17 | plog | 1,143 |
| 18 | Better Enums | 1,132 |
| 19 | mio | 1,127 |
| 20 | Nameof C++ | 1,102 |
| 21 | Argh! | 820 |
| 22 | robin-hood-hashing | 807 |
| 23 | Inja | 758 |