All Ports

Totally open, royalty-free, highly versatile audio codec

Stand-alone decoder library for .opus streams

Cross-platform modern general purpose math library written in C++23

Apache ORC - the smallest, fastest columnar storage for Hadoop workloads

Orocos Kinematics and Dynamics C++ library

A simple C++ Open Sound Control (OSC) packet manipulation library

The OpenSceneGraph is an open source high performance 3D graphics toolkit.

osgQt - Qt project for making use of OpenSceneGraph(OSG)

osgEarth - 3D Maps for OpenSceneGraph / C++14

A cross-platform library for output stream manipulation using ANSI escape sequences.

Oracle, Odbc and DB2-CLI Template Library

Provides very lightweight outcome<T> and result<T> (non-Boost edition)

Fast CSV parser and writer for Modern C++

Glob for C++17

A C++ platform to perform parallel computations of optimization tasks (global and local) via the asynchronous generalized island model.

Paho project provides open-source client implementations of MQTT and MQTT-SN messaging protocols aimed at new, existing, and emerging applications for the Internet of Things

Paho project provides open-source C++ wrapper for Paho C library

A header-only, thread safe implementation of signal-slots for C++.

Text and font handling library.

Pangolin is a lightweight portable rapid development library for managing OpenGL display / interaction and abstracting video input.

pangomm is the official C++ interface for the Pango font layout library. See, for instance, the Pango::Layout class.

A header-only, very fast and memory-friendly family of C++ hash map & btree containers.

Parallel STL is an implementation of the C++ standard library algorithms with support for execution policies, as specified in ISO/IEC 14882:2017 standard, commonly called C++17.

VTK-based Data Analysis and Visualization Application

ParMETIS - Parallel Graph Partitioning and Fill-reducing Matrix Ordering

Parquet-cpp is a C++ library to read and write the Apache Parquet columnar data format. It is now part of the arrow library.

A declarative parser combinator library for C++20.

a lightweight json library written in C

Pairing-Based Crypto library provides low-level routines for pairing-based cryptosystems.

PcapPlusPlus is a multiplatform C++ library for capturing, parsing and crafting of network packets. It is designed to be efficient, powerful and easy to use. It provides C++ wrappers for the most popular packet processing engines such as libpcap, Npcap, WinPcap, DPDK, AF_XDP and PF_RING.

PCG — C++ Implementation

Maintainer function to acquire a PCI ID Repository database snapshot

Point Cloud Library (PCL) is open source library for 2D/3D image and point cloud processing.

Perl Compatible Regular Expressions

Regular Expression pattern matching using the same syntax and semantics as Perl 5.

PDAL - Point Data Abstraction Library is a library for manipulating point cloud data.

C API for the Point Data Abstraction Library (PDAL)

PDAL is Point Data Abstraction Library. GDAL for point cloud data.

Public Domain Curses - a curses library for environments that don't fit the termcap/terminfo model.

Pattern-defeating quicksort (pdqsort) is a novel sorting algorithm

pe-parse is a principled, lightweight C/C++ PE parser

The Parsing Expression Grammar Template Library (PEGTL) is a zero-dependency C++ header-only parser combinator library for creating parsers according to a Parsing Expression Grammar (PEG).

The Parsing Expression Grammar Template Library (PEGTL) is a zero-dependency C++ header-only parser combinator library for creating parsers according to a Parsing Expression Grammar (PEG). This version maintains compatibility with C++11.

Performance instrumentation and tracing for Android, Linux and Chrome

PFFFT, a pretty fast Fourier Transform.

Library to interface with the PF_RING™ kernel module for processing packets at high-rates while providing a consistent API.

Linq for list comprehension in C++

Native API header files for the System Informer project.

2D physics header-only library for videogames developed in C using raylib library.