DreamHazeSever / meanp-injector-rpocket-team

Advanced Lightweight C++26 DLL Injection Framework for Windows Memory Patching 2026

nlohmann / json

JSON for Modern C++

gabime / spdlog

Fast C++ logging library.

yhirose / cpp-httplib

A C++ header-only HTTP/HTTPS server and client library

skypjack / entt

Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more

Immediate-Mode-UI / Nuklear

A single-header ANSI C immediate mode cross-platform GUI library

doctest / doctest

The fastest feature-rich C++11/14/17/20/23 single-header testing framework

Neargye / magic_enum

Static reflection for enums (to string, from string, iteration) for modern C++, work with any enum type without any macro or boilerplate code

mlpack / mlpack

mlpack: a fast, header-only C++ machine learning library

CrowCpp / Crow

A Fast and Easy to use microframework for the web.

p-ranav / argparse

Argument Parser for Modern C++

stephenberry / glaze

Extremely fast, in memory, serialization, reflection, and RPC library for C++. JSON, BEVE, BSON, CBOR, CSV, JSONB, MessagePack, TOML, YAML, EETF

jlblancoc / nanoflann

nanoflann: a C++11 header-only library for Nearest Neighbor (NN) search with KD-trees

SergiusTheBest / plog

Portable, simple and extensible C++ logging library

Neargye / nameof

Nameof operator for modern C++, simply obtain the name of a variable, type, function, macro, and enum

zeromq / cppzmq

Header-only C++ binding for libzmq

dfeneyrou / palanteer

Visual Python and C++ nanosecond profiler, logger, tests enabler

qicosmos / cinatra

C++20 实现的跨平台、header only，易用的高性能http库; modern c++(c++20), cross-platform, header-only, easy to use http framework

taocpp / PEGTL

Parsing Expression Grammar Template Library

pocketpy / pocketpy

Portable Python 3.x Interpreter in Modern C for Game Scripting

nemtrif / utfcpp

UTF-8 with C++ in a Portable Way

pantor / inja

A Template Engine for Modern C++

kfrlib / kfr

Fast, modern C++ DSP framework, FFT, Sample Rate Conversion, FIR/IIR/Biquad Filters (SSE, AVX, AVX-512, ARM NEON, RISC-V RVV)

max0x7ba / atomic_queue

C++14 concurrent lock-free low-latency queue.

Taywee / args

A header-only C++ argument parser library. Supposed to be flexible and powerful, and attempts to be compatible with the functionality of the Python standard argparse library (though not necessarily the API).

serge-sans-paille / frozen

a header-only, constexpr alternative to gperf for C++14 users

martinus / unordered_dense

A fast & densely stored hashmap and hashset

artem-ogre / CDT

Constrained Delaunay Triangulation (C++)

erwincoumans / tiny-differentiable-simulator

Tiny Differentiable Simulator is a header-only C++ and CUDA physics library for reinforcement learning and robotics with zero dependencies.

rigtorp / SPSCQueue

A bounded single-producer single-consumer wait-free and lock-free queue written in C++11

jbikker / tinybvh

Header-only dependency-free BVH construction and traversal library.

madmann91 / bvh

A modern C++ BVH construction and traversal library

Thalhammer / jwt-cpp

A header only library for creating and validating json web tokens in c++

yhirose / cpp-peglib

A single file C++ header-only PEG (Parsing Expression Grammars) library

nholthaus / units

a compile-time, header-only, dimensional analysis and unit conversion library built on c++14 with no dependencies.

mapbox / earcut.hpp

Fast, header-only polygon triangulation

ilqvya / random

Random for modern C++ with convenient API

Tracktion / choc

A collection of header only classes, permissively licensed, to provide basic useful tasks with the bare-minimum of dependencies.

danielaparker / jsoncons

A C++, header-only library for constructing JSON and JSON-like data formats, with JSON Pointer, JSON Patch, JSON Schema, JSONPath, JMESPath, CSV, MessagePack, CBOR, BSON, UBJSON, toon-format

cppfastio / fast_io

Freestanding fast input/output for C++20

avaneev / r8brain-free-src

High-quality pro audio resampler / sample rate conversion header-only C++ library. Very fast, for both audio resampling and time-series interpolation.

crypto-chassis / ccapi

A header-only C++ library for interacting with crypto exchanges. Bindings for Python, Java, C#, Go, and Javascript are provided.

taocpp / json

C++ header-only JSON library

BowenFu / matchit.cpp

match(it): A lightweight single-header pattern-matching library for C++17 with macro-free APIs.

p-ranav / csv2

Fast CSV parser and writer for Modern C++

ptsouchlos / thread-pool

A modern, fast, lightweight thread pool library based on C++2x

p-ranav / alpaca

Serialization library written in C++17 - Pack C++ structs into a compact byte-array without any macros or boilerplate code

nonstd-lite / expected-lite

expected lite - C++23 expected objects for C++11 and later in a single-file header-only library

avaneev / lzav

Fast In-Memory Data Compression Algorithm (header-only C/C++) 540+MB/s compress, 3000+MB/s decompress, ratio% better than LZ4, Snappy, and Zstd@--1

nonstd-lite / span-lite

span lite - A C++20-like span for C++98, C++11 and later in a single-file header-only library

nihiL7331 / polesitter

Header-only FMM implementation written in C99.