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A curated list of awesome header-only C++ libraries
| Library | Stars | Description | License |
|---|---|---|---|
| Argh! |  |
Argh! A minimalist argument handler. |  |
| argparse |  |
Argument Parser for Modern C++. |  |
| args |  |
A simple header-only C++ argument parser library. | |
| cmd_line_parser |  |
Command line parser for C++17. | |
| CLI11 |  |
CLI11 is a command line parser for C++11 and beyond. | |
| clipp |  |
Powerful & Expressive Argument Parsing for Modern C++. | |
| cxxopts |  |
Lightweight C++ GNU style option parser library. | |
| fire-hpp |  |
Create fully functional CLIs using function signatures. |  |
| flags |  |
Simple, extensible, header-only C++17 argument parser. |  |
| structopt |  |
Parse command line arguments by defining a struct. | |
| Library | Stars | Description | License |
|---|---|---|---|
| minimp3 |  |
Minimalistic MP3 decoder single header library. |  |
| Library | Stars | Description | License |
|---|---|---|---|
| nanobench |  |
Simple, fast, accurate microbenchmarking for C++11. | |
| picobench |  |
A small microbenchmarking library for C++11. | |
| Library | Stars | Description | License |
|---|---|---|---|
| comms |  |
Implement binary communication protocols in >=C++11. |  |
| Library | Stars | Description | License |
|---|---|---|---|
| Gzip |  |
Gzip header-only C++ library. |  |
| interpolative_coding |  |
Binary Interpolative Coding algorithm. | |
| zstr |  |
A C++ header-only ZLib wrapper. | |
| Library | Stars | Description | License |
|---|---|---|---|
| cs_libguarded |  |
Multithreaded programming. | |
| mvThreadPool |  |
Simple header-only C++ thread pool library. | |
| taskflow |  |
Modern C++ Parallel Task Programming. | |
| transwarp |  |
A header-only C++ library for task concurrency. | |
| Library | Stars | Description | License |
|---|---|---|---|
| cppcodec |  |
Encode/decode base64, base64url, base32, etc. | |
| digestpp |
 |
C++11 header-only message digest library. | |
| PicoSHA2 |  |
Feader-file-only, SHA256 hash generator in C++. | |
| Library | Stars | Description | License |
|---|---|---|---|
| OTL | Oracle, ODBC and DB2-CLI Template Library. | OpenBSD |
| Library | Stars | Description | License |
|---|---|---|---|
| Boost.JSON |  |
JSON parsing, serialization, inspection and modification. | |
| cpptoml |  |
Header-only library for parsing TOML. | |
| csv2 |  |
Fast CSV parser and writer for Modern C++. | |
| CSV Parser |  |
Reading, writing, and analyzing CSV files. | |
| daw_json_link |  |
Static JSON parsing in C++. | |
| Fast C++ CSV Parser |  |
Fast library for reading CSV files. | |
| inih |  |
This is a header only C++ version of inih. | |
| nlohmann/json |  |
JSON for Modern C++. | |
| jsoncons |  |
Construct JSON and JSON-like data formats. | |
| minicsv |  |
Bare minimal CSV stream based on C++ file streams. | |
| picojson |  |
a header-file-only, JSON parser serializer in C++. | |
| rapidcsv |  |
C++ CSV parser library. | |
| rapidjson |  |
A fast JSON parser/generator for C++. | |
| rapidxml |
 |
RapidXML fork; XML namespacing, per-element parsing, etc. | |
| simdjson |  |
Parsing gigabytes of JSON per second. |  |
| simpleini |  |
Read and write INI-style configuration files. | |
| taocpp JSON |  |
C++ header-only JSON library. | |
| toml11 |  |
TOML for Modern C++. | |
| tomlplusplus |  |
TOML config file parser and serializer for >=C++17. | |
| tortellini |  |
A really stupid INI file format for C++11. |
|
| valijson |  |
JSON Schema validation. | |
| xml2json |  |
A header-only C++ library converts XML to JSON. | |
| Library | Stars | Description | License |
|---|---|---|---|
| dlib |  |
A toolkit for real-world machine learning and data analysis. | |
| frugally deep |  |
Use Keras models in C++. | |
| hnswlib |  |
Fast approximate nearest neighbors. | |
| MiniDNN |  |
A header-only C++ library for deep neural networks. | |
| nanoflann |  |
Nearest Neighbor (NN) search with KD-trees. | |
| tiny-dnn |  |
Dependency-free deep learning framework in C++14. | |
| Library | Stars | Description | License |
|---|---|---|---|
| asap |  |
Creating, displaying, iterating and manipulating dates. | |
| cxx prettyprint |  |
Pretty-printing of any container in C++(0x). | |
| fmt |  |
A modern formatting library. | |
| pprint |  |
Pretty Printer for Modern C++. | |
| strf |  |
A fast formatting library for C++14. | |
| tabulate |  |
Table Maker for Modern C++. | |
| Library | Stars | Description | License |
|---|---|---|---|
| boolinq | |
Simplest C++ header-only LINQ template library. | |
| Library | Stars | Description | License |
|---|---|---|---|
| BitMagic |  |
Compressed bit-vectors, logical operations, memory compact containers. | |
| chobo-shl |  |
A collection of several stl-like libraries for C++11. | |
| concurrent queue |  |
Fast multi-producer, multi-consumer lock-free concurrent queue. |
|
| dynamic bitset |  |
The C++17 header-only dynamic bitset. | |
| frozen |  |
Constexpr alternative to gperf for C++14 users. | |
| hopscotch map |
 |
Fast hash map and hash set using hopscotch hashing. | |
| immer |  |
Postmodern immutable and persistent data structures. | |
| MPMCQueue |  |
A bounded multi-producer multi-consumer concurrent queue. | |
| outcome |  |
Lightweight outcome and result. | |
| parallel hashmap |  |
Very fast and memory-friendly hashmap and btree containers. | |
| PGM-index |
 |
Blazing fast queries and updates over billions of items using orders of magnitude less memory than other containers. | |
| robin-hood hashing |  |
Fast & memory efficient hashtable based on robin hood hashing. | |
| robin-map |  |
Fast hash map and hash set using robin hood hashing. | |
| tries |  |
Fast and highly customisable C++20 trie implementation. | -blue){kind=icon} |
| Library | Stars | Description | License |
|---|---|---|---|
| backward-cpp |  |
A beautiful stack trace pretty printer for C++. | |
| Library | Stars | Description | License |
|---|---|---|---|
| eventbus |  |
Mediator pattern event bus for C++. | |
| eventpp |  |
Event Dispatcher and callback list for C++. | |
| Library | Stars | Description | License |
|---|---|---|---|
| simplebinstream |  |
C++ Simplistic Binary Stream. | |
| filesystem |  |
Cross-platform implementation of std::filesystem for C++11/14/17. | |
| glob |  |
Glob for C++17. | |
| llfio |  |
P1031 low-Level file i/o and filesystem library. | |
| mio |  |
Cross-platform C++11 memory mapped file IO. | |
| mm_file |  |
Memory-mapped files for C++. | |
| tinydir |
 |
Lightweight, portable C directory and file reader. | |
| Library | Stars | Description | License |
|---|---|---|---|
| FunctionalPlus |  |
Functional Programming Library for C++. | |
| immer | |
Persistent functional data structures in C++. | |
| lager |  |
Redux-like unidirectional data-flow for C++. | |
| schmutz |  |
Easy Guile Scheme C++ bindings. | |
| zug |  |
Transducers (from Clojure) in C++. | |
| Library | Stars | Description | License |
|---|---|---|---|
| arcball_camera |  |
Immediate-mode camera for your graphics demos. | |
| cinolib |  |
Process polygonal and polyhedral meshes. | |
| cr |  |
A Simple C Hot Reload Header-only Library. | |
| CxxSwizzle |  |
Modern C++ swizzling header-only library. | |
| earcut.hpp |  |
Fast Polygon triangulation. |  |
| entt |  |
Entity component system (ECS) and much more. | |
| glm |  |
OpenGL Mathematics (GLM). | |
| librg |  |
🚀 Making multi-player gamedev simpler since 2017. |
|
| nanort |  |
Modern ray tracing kernel. | |
| px |  |
Thread Scheduling, Rendering, and so on. | |
| Sokol |  |
Cross-platform libraries for C and C++. |  |
| stb |  |
Single-file public domain libraries. | |
| Swarmz |  |
Swarming (flocking) library for real-time applications. | |
| tiny-differentiable-simulator |
 |
Tiny Differentiable Simulator is a header-only C++ physics library with zero dependencies. | |
| tinygltf |  |
C++11 tiny glTF 2.0 library. | |
| tweeny |  |
A modern C++ tweening library. | |
| Vookoo |  |
Take the pain out of Vulkan. | |
| voxelizer |  |
Header only mesh voxelizer in c99. |
| Library | Stars | Description | License |
|---|---|---|---|
| thrust |  |
Parallel programming library. |
|
| vuda |
 |
Vulkan-based library that provides a CUDA Runtime API interface for writing GPU-accelerated applications. | |
| Library | Stars | Description | License |
|---|---|---|---|
| GuiLite |  |
The smallest header-only GUI library(5 KLOC) for all platforms. | |
| Nuklear |  |
Immediate mode cross-platform GUI library. |
|
| WinLamb |  |
C++11 native Win32 GUI library. | |
| Library | Stars | Description | License |
|---|---|---|---|
| cinatra |  |
Modern (c++17), Cross-platform Http Framework. | |
| cpp-httplib |  |
A C++11 Cross platform HTTP/HTTPS library. | |
| jwt-cpp |  |
Create and validate JSON web tokens. | |
| RESTinio |  |
Asynchronous HTTP/WebSocket server C++14 library | |
| Library | Stars | Description | License |
|---|---|---|---|
| BitmapPlusPlus |  |
Simple and Fast header only Bitmap (BMP) library. | |
| color-util |  |
Colors, Color space converters for RGB, HSL, XYZ, Lab, etc. | |
| nanopm |  |
NanoPM, single header only PatchMatch. |
| Library | Stars | Description | License |
|---|---|---|---|
| jni.hpp |  |
A modern, type-safe, C++14 wrapper for JNI. | |
| pybind11 |  |
Seamless operability between C++11 and Python. | |
| Selene | |
Simple C++11 friendly bindings to Lua. | |
| v8pp |  |
Bind C++ functions and classes into V8 JavaScript engine. | |
| Library | Stars | Description | License |
|---|---|---|---|
| easyloggingpp |  |
Single header C++ logging library. | |
| plog |  |
Portable, simple and extensible C++ logging library. | |
| spdlog |  |
Fast C++ logging library. | |
| Library | Stars | Description | License |
|---|---|---|---|
| amgcl |  |
Solve large sparse linear systems with algebraic multigrid method. | |
| dj_fft |  |
FFT library. |
|
| eigen | Template library for linear algebra. |
|
|
| fpm |  |
Fixed-point math library. | |
| kfr |  |
Fast DSP framework, FFT, Sample Rate Conversion, etc. |  |
| libmorton |
 |
Methods to efficiently encode/decode Morton codes in/from 2D/3D coordinates. | |
| linalg |  |
Short vector math library for C++. | |
| matplotlib-cpp |  |
C++ plotting library built on the popular matplotlib. | |
| NumCpp |  |
C++ implementation of the Python Numpy library. | |
| random |  |
Random for modern C++ with convenient API. | |
| spectra |  |
A header-only C++ library for large scale eigenvalue problems. | |
| universal |  |
Universal Number Arithmetic. | |
| Library | Stars | Description | License |
|---|---|---|---|
| ugc |  |
Incremental garbage collector. | |
| Library | Stars | Description | License |
|---|---|---|---|
| FakeIt |  |
C++ mocking made easy. | |
| trompeloeil |  |
C++14 mocking framework. | |
| Library | Stars | Description | License |
|---|---|---|---|
| asio |  |
Asio C++ Library. | |
| brynet |  |
Cross-platform C++ TCP network library. | |
| cppzmq |  |
Header-only C++ binding for libzmq. | |
| nygma |  |
Network packet processing and indexing. |  |
| uvw |  |
libuv wrapper in modern C++. | |
| Library | Stars | Description | License |
|---|---|---|---|
| ensmallen |  |
C++ library for numerical optimization. | |
| Library | Stars | Description | License |
|---|---|---|---|
| cpp-peglib |  |
PEG (Parsing Expression Grammars) library. | |
| PEGTL |  |
Parsing Expression Grammar Template Library. | |
| Library | Stars | Description | License |
|---|---|---|---|
| hedley |  |
Move #ifdefs out of your code. |  |
| Library | Stars | Description | License |
|---|---|---|---|
| better-enums |  |
C++ compile-time enum to string, iteration. | |
| magic_enum |  |
Static reflection for enums. | |
| meta |  |
Macro-free runtime reflection system. | |
| nameof |  |
Nameof operator for modern C++. | |
| refl-cpp |  |
Compile-time reflection library. | |
| visit_struct |  |
A miniature library for struct-field reflection. | |
| Library | Stars | Description | License |
|---|---|---|---|
| compile-time regular expressions |
 |
A Compile time regular expression matcher. | |
| Library | Stars | Description | License |
|---|---|---|---|
| manif |  |
Small library for Lie theory. | |
| Library | Stars | Description | License |
|---|---|---|---|
| cereal |  |
A C++11 library for serialization. | |
| essentials |  |
Transparent serialization/deserialization. | |
| fuser |  |
Automatic (de)serialization of C++ types to/from JSON. | |
| Library | Stars | Description | License |
|---|---|---|---|
| libsimdpp |  |
Low-level SIMD library. | |
| simde |  |
Implementations of SIMD instruction sets. | |
| tsimd |  |
Fundamental C++ SIMD types for Intel CPUs. | |
| Library | Stars | Description | License |
|---|---|---|---|
| bitflags |  |
Easily managing set of flags. | |
| expected |  |
C++11/14/17 std::expected. | |
| expected-lite |  |
Expected objects in C++11 and later. | |
| gsl |  |
ISO C++ Guidelines Support Library (GSL) by Microsoft. | |
| gsl-lite |  |
ISO C++ Guidelines Support Library (GSL). | |
| hana |  |
Your standard library for metaprogramming. | |
| leaf |  |
Lightweight Error Augmentation Framework. | |
| mp11 |  |
C++11 metaprogramming library. | |
| NanoRange |  |
Range-based goodness for C++17. | |
| numeric_ranges |  |
Numeric algorithms for C++20 Ranges. | |
| optional | |
C++11/14/17 std::optional. | |
| optional-lite |  |
A C++17-like optional for C++98/11 and later. | |
| range-v3 |  |
Range library for C++14/17/20. | |
| rangesnext |  |
Tanges features for c+23 ported to C++20. | |
| span-lite |  |
A C++20-like span for C++98/11 and later. | |
| string-view-lite |  |
A C++17-like string_view for C++98/11 and later. | |
| uberswitch |  |
Alternative to the C++ switch statement. | |
| variant-lite |  |
A C++17-like variant for C++98/11 and later. | |
| Windows Implementation Libraries (WIL) |
 |
Readable type-safe C++ interfaces for common Windows coding patterns. |
|
| Library | Stars | Description | License |
|---|---|---|---|
| hsm |  |
Finite state machine library based on the boost hana. | |
| tinyfsm |  |
A simple C++ finite state machine library. | |
| Library | Stars | Description | License |
|---|---|---|---|
| histogram |  |
Multi-dimensional generalized histograms. | |
| kalman |  |
Kalman Filtering Library (EKF, UKF) based on Eigen3. | |
| stats |  |
Statistical distribution functions. | |
| Library | Stars | Description | License |
|---|---|---|---|
| utf-cpp |  |
UTF-8/16/32 for Windows/Linux/MacOs. | |
| wildcards |  |
String matching using wildcards. | |
| Library | Stars | Description | License |
|---|---|---|---|
| inja |  |
A Template Engine for Modern C++. | |
| Library | Stars | Description | License |
|---|---|---|---|
| indicators |  |
Activity Indicators for Modern C++. | |
| rang |  |
A Minimal library for terminal goodies 💄✨. | |
| termcolor |  |
Print colored messages to the terminal. | |
| Library | Stars | Description | License |
|---|---|---|---|
| ApprovalTests.cpp |  |
Native ApprovalTests for C++. | |
| Catch2 |  |
Test framework for unit-tests, TDD and BDD. | |
| doctest |  |
The fastest feature-rich C++11/14/17/20 testing framework. | |
| iutest |  |
Test framework for unit-tests. | |
| lest |  |
Tiny framework for unit-tests, TDD and BDD. | |
| ut |  |
UT: C++20 μ(micro)/Unit Testing Framework. | |
| Library | Stars | Description | License |
|---|---|---|---|
| mpusz/units |  |
Compile-time dimensional analysis and unit/quantity manipulation. | |
| nholthaus/units |  |
Dimensional analysis and unit conversion library. | |
| SI |  |
Type safety and user defined literals for physical units. | |
| Library | Stars | Description | License |
|---|---|---|---|
| crow |  |
Micro web framework inspired by Python Flask. | |
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