Pybind11 bindings for Google's Protocol Buffers

https://github.com/pybind/pybind11_protobuf

Very basic wrapper for libcanberra

https://github.com/totdb/pycanberra

"meta-port" for the default version of Python interpreter

https://www.python.org/

GDSII manipulation library

https://pythonhosted.org/python-gdsii/

"meta-port" for version 2 of the Python interpreter

https://www.python.org/

Meta-port for the Python interpreter 3.x

https://www.python.org/

Collaborative, networked system to detect and block spam

https://github.com/SpamExperts/pyzor

Chinese PinYin and Bopomofo conversion library

https://github.com/pyzy/pyzy

Cross-platform crypto API for Qt 6

https://api.kde.org/qca/html/index.html

Coroutines for Qt

https://github.com/danvratil/qcoro

Quick Database Manager

https://dbmx.net/qdbm/

QEMU CPU Emulator (github bsd-user branch)

https://www.qemu.org/

Graphical interface to git repositories

https://github.com/tibirna/qgit

Graphical effects and filters library for Qt5

https://sourceforge.net/projects/qimageblitz/

Library to manage JSON objects with Qt

https://qjson.sourceforge.net/

Sudoku generating and solving software

http://people.freedesktop.org/~hughsient/appdata/

Command-line program to query game servers on the net

https://github.com/multiplay/qstat

Additional Styles for Qt 5 and KDE

https://qt-project.org

Qt6 CoAP client module

https://www.qt.io/

Qt module implementing the MQTT protocol

https://www.qt.io/

Qt/C++ wrapper for ZIP/UNZIP package

https://github.com/stachenov/quazip

Circuit simulator of the Qucs project

https://github.com/Qucs/qucsator

Sub-second search & analytics engine on cloud storage

https://quickwit.io/

Bicycle with trailers like "sl"

https://fukuchi.org/works/shortshort/

Erlang implementation of AMQP

https://www.rabbitmq.com/

RabbitMQ C AMQP client library

https://www.rabbitmq.com/

Movie Library Manager for Usenet and BitTorrent users

https://radarr.video

Test performance of storage devices

Elegant sans-serif font, designed in a single thin weight

https://www.theleagueofmoveabletype.com/raleway

Experimental range library for C++11/14/17

https://github.com/ericniebler/range-v3

Fast JSON parser/generator for C++ with both SAX/DOM style API

https://github.com/Tencent/rapidjson

File archiver (binary port)

https://rarlab.com/

Mount RAR archives as file system

https://hasse69.github.io/rar2fs/

OMF help system based on the Freedesktop specification

https://rarian.freedesktop.org/

Unix incarnation of the plan9 shell

https://github.com/rakitzis/rc

Sync files to and from various cloud services

https://rclone.org/

RDP client for Windows NT/2000/2003 Terminal Server

http://www.rdesktop.org/

Fast C++ regex library

https://github.com/google/re2

Lexer generator for C, C++ and Go with a focus on generating fast code

https://re2c.org/

Book Manager and Automation (Sonarr for Ebooks)

https://readarr.com

Kernel driver for Realtek PCIe Ethernet Controllers

https://github.com/alexdupre/rtl_bsd_drv

Kernel driver for Realtek PCIe Ethernet Controllers

https://github.com/alexdupre/rtl_bsd_drv

Build-tool for Erlang that follows OTP principles

https://github.com/rebar/rebar

Build tool for Erlang

https://www.rebar3.org/

Persistent key-value database with built-in net interface

https://redis.io/

Persistent key-value database with built-in net interface

https://redis.io/

Persistent key-value database with built-in net interface

https://redis.io/

Persistent key-value database with built-in net interface

https://redis.io/

Controller and GCode generator for RepRap 3D printers

https://reprap.org/wiki/RepSnapper_Manual:Introduction

Fast, secure, efficient backup program

https://restic.net/