Unix incarnation of the plan9 shell

https://github.com/rakitzis/rc

Sync files to and from various cloud services

https://rclone.org/

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

Fast, secure, efficient backup program

https://restic.net/

Rime emoji suggestions support

https://github.com/rime/rime-emoji

Essay - the shared vocabulary and language model for Rime

https://github.com/rime/rime-essay

Essential files for building up your Rime configuration

https://github.com/rime/rime-prelude

Flexible message logging facility for C++

https://www.arg0.net/rlog

Recurrent neural network for audio noise reduction

https://github.com/xiph/rnnoise

Rocinante is a lightweight configuration management software

https://github.com/bastillebsd/rocinante

Convert .rpm files for extraction with gcpio, needs just perl

Command-line tool that performs SDR with RTL2832-based USB sticks

https://sdr.osmocom.org/trac/wiki/rtl-sdr

Wrapper around libsass

https://libsass.org/

Small man page generator

https://git.sr.ht/~sircmpwn/scdoc

"Simplified" DocBook XML DTD

http://www.oasis-open.org/docbook/xml/simple/

Distributed Object Store and Filesystem

https://github.com/seaweedfs/seaweedfs/wiki

Checks installed packages for vulnerabilities

http://github.com/laffer1/security-advisory-client/

Scaling, colorspace conversion, and dithering library

https://github.com/sekrit-twc/zimg

Perl-script to send xmpp (jabber) messages

http://sendxmpp.hostname.sk/

Portable AirPlay server implementation

https://github.com/juhovh/shairplay

Generic script compiler

http://www.datsi.fi.upm.es/~frosal/frosal.html

Benchmark utility for POSIX shell comparison

https://github.com/shellspec/shellbench

Randomly permute input lines

https://github.com/ibara/shuf

xUnit based unit testing for Unix shell scripts

https://github.com/kward/shunit2/

Sigar system information API

https://support.hyperic.com/display/SIGAR/Home

Create and verify cryptographic signatures

https://github.com/leahneukirchen/outils/

Simple MTP fuse filesystem driver

https://github.com/phatina/simple-mtpfs

C++ library providing a simple API to INI-style configuration files

https://github.com/brofield/simpleini

General purpose C libraries used by skarnet.org software

https://www.skarnet.org/software/skalibs/

SKK dictionary from Wikipedia (Japanese edition)

https://github.com/tokuhirom/jawiki-kana-kanji-dict

Jisyo (dictionary) files for the SKK Japanese-input software

http://openlab.jp/skk/dic.html

CDB jisyo (dictionary) files for the SKK Japanese-input software

http://openlab.jp/skk/dic.html

Slack client for your terminal

https://github.com/erroneousboat/slack-term

Tool for checking, and diagnosing DNS zones

Small audio and MIDI framework from the OpenBSD project

https://www.sndio.org/

Lightweight network intrusion detection system

http://www.snort.org/

Snowball stemmer library for C

https://snowballstem.org/

Softflowd is flow-based network traffic analyser with export

http://www.mindrot.org/softflowd.html

Discover, group, and control Sonos speakers

https://github.com/steipete/sonoscli

Extremely memory-efficient hash_map implementation

http://code.google.com/p/google-sparsehash

CLI and Go API to test internet speed using speedtest.net

https://github.com/showwin/speedtest-go

open-source patent-free voice codec

http://www.speex.org/

Tool for computing context triggered piecewise hashes

https://ssdeep-project.github.io/ssdeep/

Chat over SSH

https://github.com/shazow/ssh-chat

Stb single-file public domain libraries for C/C++

https://github.com/nothings/stb/

C++ header-only parsers for various SVG syntaxes

http://svgpp.org/

Internal sysctl object to implement an improved sysctlbyname(3)

https://gitlab.com/alfix/sysctlbyname-improved/

Kernel sysctl MIB-Tree interface

https://gitlab.com/alfix/sysctlinfo