Seamless operability between C++11 and Python

OSS-Fuzz - continuous fuzzing for open source software.

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

nanomsg library

Bear is a tool that generates a compilation database for clang tooling.

A YAML parser and emitter in C++

Rust for C++ programmers

Compile Time Regular Expression in C++

This is a modified version of Console 2 for a better experience under Windows Vista/7/8/10 and a better visual rendering.

KLEE Symbolic Execution Engine

Postmodern immutable and persistent data structures for C++ — value semantics at scale

Tools for tracing OpenGL, Direct3D, and other graphics APIs

A C++ library of Concurrent Data Structures

C++ wrappers for SIMD intrinsics and parallelized, optimized mathematical functions (SSE, AVX, AVX512, NEON, SVE, WebAssembly, VSX, RISC-V))

PDF exporter for HTML presentations

Graphics API Debugger

Library to parse and work with the C++ AST

SIMD Vector Classes for C++

Ion

easy to use, powerful & expressive command line argument parsing for modern C++ / single header / usage & doc generation

Portable header-only C++ low level SIMD library

Descriptions of C++17 features, presented mostly in "Tony Tables" (hey, the name wasn't my idea)

A minimalistic and high-performance SAT solver

A comprehensive test suite for RFC 8259 compliant JSON parsers

C++11 port of docopt

A Compendium Information Guide for UMG and Slate in Unreal Engine.

A (work-in-progress) nextgen Doxygen for C++

clang running in browser (wasm)

Compile-time C Compiler implemented as C++14 constant expressions