Library for editing command lines as they are typed

https://tiswww.case.edu/php/chet/readline/rltop.html

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/

Converts files between character sets and usages

https://www.gnu.org/software/recode/recode.html

Record desktop sessions to an Ogg-Theora-Vorbis file

http://recordmydesktop.sourceforge.net/

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/

High-level interface for RDF

https://librdf.org

Adjusts the color temperature of your screen

http://jonls.dk/redshift/

Microsoft .Net Portable Class Library Reference Assemblies

https://blogs.msdn.microsoft.com/dotnet/2013/10/14/portable-class-library-pcl-now-available-on-all-platforms/

GTK Remote Desktop Client (lite flavor)

https://www.remmina.org/

Graphical interface to rdesktop

http://gap.nongnu.org/remotedesk/index.html

Fast, secure, efficient backup program

https://restic.github.io

Uncompile an rgb color-name database

https://gitlab.freedesktop.org/xorg/app/rgb

Utility and library for computing and checking of file hashes

https://rhash.sourceforge.net/

Audio player for GNOME

https://wiki.gnome.org/Apps/Rhythmbox

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

C11 / gnu11 utilities C library

https://github.com/shlomif/rinutils

Command line search tool

http://blog.burntsushi.net/ripgrep/

GNU Compiler Collection for bare metal riscv64 cross-development

https://gcc.gnu.org/

Image viewer with Xfce integration

https://goodies.xfce.org/projects/applications/ristretto

Rockchip Binary blobs

https://github.com/rockchip-linux/rkbin

Flexible message logging facility for C++

https://www.arg0.net/rlog

Recurrent neural network for audio noise reduction

https://github.com/xiph/rnnoise

Fast hash map and hash set

https://github.com/Tessil/robin-map

Roboto typeface family

http://developer.android.com/design/style/typography.html

Rocinante is a lightweight configuration management software

https://github.com/bastillebsd/rocinante

Window switcher, run dialog and dmenu replacement

https://github.com/davatorium/rofi

Japanized and message separated version of Rogue-clone: Version II

Fully skinnable XHTML/CSS webmail written in PHP

https://roundcube.net/

Classic skin/theme for Rouncube webmail

https://github.com/roundcube/classic/

Larry skin/theme for Rouncube webmail

https://github.com/roundcube/larry/

Firmware for RaspberryPi Single Board Computer

https://github.com/raspberrypi/firmware

Convert .rpm files to cpio format

The RPM Package Manager

https://rpm.org/

Round Robin Database Tools

https://oss.oetiker.ch/rrdtool/

Fast spam filtering system

https://rspamd.com/

Restricted Secure SHell only for sftp or/and scp

http://www.pizzashack.org/rssh/index.shtml

Network file distribution/synchronization utility

https://rsync.samba.org/

Syslogd supporting SQL, TCP, and TLS

https://www.rsyslog.com/

Generic RF data receiver and decoder for ISM band devices

https://github.com/merbanan/rtl_433

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

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

Realtek USB bluetooth adaptor firmwares used by rtlbtfw(8)

https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git

Open-source C implementation of the RPKI/Router Protocol client

https://rtrlib.realmv6.org/