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/

Library for editing command lines as they are typed

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

Converts files between character sets and usages

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

RECORD extension headers

http://www.freedesktop.org/wiki/Software/xlibs

Persistent key-value database with built-in net interface

https://redis.io/

High-level interface for RDF

http://librdf.org

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/

Graphical interface to rdesktop

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

RenderProto protocol headers

https://www.freedesktop.org/wiki/Software/xlibs/

Resource extension headers

https://www.freedesktop.org/wiki/Software/xlibs/

Uncompile an rgb color-name database

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

Utility and library for computing and checking of file hashes

http://rhash.sourceforge.net/

Fully skinnable XHTML/CSS webmail written in PHP

https://roundcube.net/

Convert .rpm files to cpio format

The RPM Package Manager

https://rpm.org/

Round Robin Database Tools

http://www.rrdtool.org/

Restricted Secure SHell only for sftp or/and scp

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

Sample implementation of a Remote Start client

Network file distribution/synchronization utility

http://rsync.samba.org/

Kernel module which provides /dev/rtc device support

RTMP streams download utility

http://rtmpdump.mplayerhq.hu/

Ruby interface to Oracle Berkeley DB revision 2 or later

https://github.com/knu/ruby-bdb

Binary data dumper module for Ruby

http://www.geocities.co.jp/SiliconValley-Oakland/2986/

Ruby extension to GDBM library

Object-oriented interpreted scripting language

http://www.ruby-lang.org/en/

Object-oriented interpreted scripting language

http://www.ruby-lang.org/en/

Object-oriented interpreted scripting language

http://www.ruby-lang.org/en/

Low memory usage xterm replacement that supports color

Shared lib from the samba package

http://www.samba.org/

NetBIOS Name lookup tool

http://www.samba.org/

nsupdate utility with the GSS-TSIG support

https://www.isc.org/software/bind

Samba "ftp-like" client

http://www.samba.org/

A free SMB and CIFS client and server for UNIX

http://www.samba.org/

Free SMB/CIFS and AD/DC server and client for Unix

http://www.samba.org/

Free SMB/CIFS and AD/DC server and client for Unix

http://www.samba.org/

Free SMB/CIFS and AD/DC server and client for Unix

http://www.samba.org/

SambaSentinel is a gtk-frontend to smbstatus with additional features

API for access to scanners, digitals camera, frame grabbers etc

http://www.sane-project.org/

Stand-Alone shell combining many common utilities

http://members.tip.net.au/~dbell/

Scan_ffs recovers lost disklabel

High-speed Dirac codec

http://www.diracvideo.org/

ANSI C version of the SciMark2 benchmark

https://math.nist.gov/scimark2/download_c.html

Build tool alternative to make

https://scons.org/

Tiny shell that only permits scp and sftp

https://github.com/scponly/scponly/wiki

Converts the output of "vidcontrol -p" to PNG

Converts the output of "vidcontrol -p" to text

Multi-screen window manager

http://www.gnu.org/software/screen/

Small and lightweight screen(1) wrapper

https://sourceforge.net/projects/screenie/

Various X related scripts

https://cgit.freedesktop.org/xorg/app/scripts