Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

JSON for Modern C++

An open-source C++ library developed and used at Facebook.

Fast C++ logging library.

Open Source alternative to Algolia + Pinecone and an Easier-to-Use alternative to ElasticSearch ⚡ 🔍 ✨ Fast, typo tolerant, in-memory fuzzy Search Engine for building delightful search experiences

A modern formatting library

A modern, C++-native, test framework for unit-tests, TDD and BDD - using C++14, C++17 and later (C++11 support is in v2.x branch, and C++03 on the Catch1.x branch)

Abseil Common Libraries (C++)

A General-purpose Task-parallel Programming System using Modern C++

MSVC's implementation of the C++ Standard Library.

EASTL stands for Electronic Arts Standard Template Library. It is an extensive and robust implementation that has an emphasis on high performance.

High performance server-side application framework

Crow is very fast and easy to use C++ micro web framework (inspired by Python Flask)

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

A library of C++ coroutine abstractions for the coroutines TS

Compile Time Regular Expression in C++

A date and time library based on the C++11/14/17 <chrono> header

A dbg(…) macro for C++

Functional Programming Library for C++. Write concise and readable C++ code.

Cista is a simple, high-performance, zero-copy C++ serialization & reflection library.

Parsing Expression Grammar Template Library

Fast and exact implementation of the C++ from_chars functions for number types: 4x to 10x faster than strtod, part of GCC 12, MySQL, Chromium, Redis and WebKit/Safari

A very fast hashtable

Unified Executors

Unicode routines (UTF8, UTF16, UTF32) and Base64: billions of characters per second using SSE2, AVX2, NEON, AVX-512, RISC-V Vector Extension, LoongArch64, POWER. Part of Node.js, WebKit/Safari, Lad…

Zero overhead utilities for preventing bugs at compile time

Fast & memory efficient hashtable based on robin hood hashing for C++11/14/17/20

STL compatible C++ memory allocator library using a new RawAllocator concept that is similar to an Allocator but easier to use and write.

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

An implementation of C++17 std::filesystem for C++11 /C++14/C++17/C++20 on Windows, macOS, Linux and FreeBSD.