The GNU Readline library provides a set of functions for use by applications that allow users to edit command lines as they are typed in.
HTTP Library for GLib
Geometry Engine Open Source
Cross-language development platform for in-memory analytics
Standalone reimplementation of //base module from Chromium
Netscape portable runtime
Network Security Services from Mozilla
A fast and flexible c++ template class for tree data structures
qpdf: A content-preserving PDF document transformer
C++ Faker library for generating fake (but realistic) data.
Google's common Java, C++ and JavaScript library for parsing, formatting, and validating international phone numbers.
Production-grade client-side tracing, profiling, and analysis for complex software systems.
ASL libraries will be migrated here in the stlab namespace, new libraries will be created here.
stlab copy-on-write library
HighFive is a modern header-only C++/C++11 friendly interface for libhdf5
Coin3D GUI binding for Qt
WHATWG-compliant and fast URL parser written in modern C++, part of Node.js, Clickhouse, Redpanda, Kong, Telegram, Datadog and Cloudflare Workers.
High-quality pro HDR image resizing / scaling C++ library, including a very fast, precise, SIMD Lanczos resizer (header-only C++)
Helpers for Arrow C Data & Arrow C Stream interfaces
A JIT assembler for x86/x64 architectures supporting MMX, SSE (1-4), AVX (1-2, 512), FPU, APX, and AVX10.2
DirectStorage for Windows
Libxlsxwriter is a C library that can be used to write text, numbers, formulas and hyperlinks to multiple worksheets in an Excel 2007+ XLSX file.
OpenSSL is an open source project that provides a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It is also a general-purpose cryptography library.
A portable, simple zip library written in C
The CImg Library is a small, open-source, and modern C++ toolkit for image processing
Embedded web server, with TCP/IP network stack, MQTT and Websocket
GDAL is an open source MIT licensed translator library for raster and vector geospatial data formats.
An open source, portable, easy to use, readable and flexible TLS library, and reference implementation of the PSA Cryptography API. Releases are on a varying cadence, typically around 3 - 6 months between releases.
Event-Driven JSON Parser for C
The projectM Expression Evaluation Library. A portable drop-in replacement of Milkdrop's "ns-eel2" expression parser for use in Milkdrop, projectM and other applications. MIT licensed.
A modern, user friendly, generic, type-safe and fast C99 container library: String, Vector, Sorted and Unordered Map and Set, Deque, Forward List, Smart Pointers, Bitset and Random numbers.
The Qt Interface Framework module provides both the tools and the core APIs, for you to implement Middleware APIs, Middleware Back ends, and Middleware Services.
Value-type for composite class design for C++26 (reference implementation of std::indirect and std::polymorphic from p3019r14)
Library to write shaders directly from C++ code, supports GLSL, HLSL and SPIRV outputs.
miniz: Single C source file zlib-replacement library, originally from code.google.com/p/miniz
JPEG XL image format reference implementation
Very fast, high-quality hash function, discrete-incremental and streamed hashing-capable (non-cryptographic, inline C/C++) 27GB/s + PRNG
A tiny xml parsing library
Ruckig generates trajectories on-the-fly, allowing robots and machines to react instantaneously to sensor input.
A fast entity component system (ECS) for C & C++
mimic++, a modern and (mostly) macro free mocking framework.
Simple, portable, and self-contained stacktrace library for C++11 and newer
A library to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created.
Celero is a modern cross-platform (Windows, Linux, MacOS) Microbenchmarking library for C++ 11 and later.
A fast, small, safe, gradually typed embeddable scripting language derived from Lua
Z3 is a theorem prover from Microsoft Research
SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine.
A high performance screen capturing library for Windows rewriting DXcam in C++.
Ultra High-performance Lightweight Embedded and Server OLTP RDBMS
HarfBuzz OpenType text shaping engine