Letter: R
- radvd-0.7.2-9: A Router Advertisement daemon
 - rcs-5.7-26: Revision Control System (RCS) file version management tools.
 - rdate-1.4-2: Tool for getting the date/time from a remote machine.
 - rdesktop-1.3.1-5: X client for remote desktop into Windows Terminal Server
 - rdist-6.1.5-38: Maintains identical copies of files on multiple machines.
 - readline-4.3-13: A library for editing typed command lines.
 - readline-devel-4.3-13: Files needed to develop programs which use the readline library.
 - readline41-4.1-17: A library for editing typed in command lines.
 - redhat-artwork-0.120-1.SL.5: Artwork for Scientific Linux default look-and-feel
 - redhat-logos-1.1.25-1.SL.8: Red Hat-related icons and pictures.
 - redhat-lsb-1.3-5.2: LSB support for Red Hat Linux
 - redhat-menus-3.7.1-2: Configuration and data files for the desktop menus
 - redhat-rpm-config-8.0.32.1-1: Red Hat specific rpm configuration files.
 - rhdb-utils-3.0-3: Miscellaneous utilities for PostgreSQL - Red Hat Edition.
 - rhgb-0.14.1-5: Red Hat Graphical Boot
 - rhn-applet-2.1.17-5: Panel applet for indication that newer Red Hat packages are available
 - rhnlib-1.8-6.p23: Python libraries for the RHN project
 - rhpl-0.148.2-1: Library of python code used by programs in Red Hat Linux
 - rhythmbox-0.8.8-1: Music Management Application
 - rmt-0.4b37-1: Provides certain programs with access to remote tape devices.
 - rootfiles-8-1: The basic required files for the root user's directory.
 - rp-pppoe-3.5-22: A PPP over Ethernet client (for xDSL support).
 - rpm-4.3.3-7_nonptl: The RPM package management system.
 - rpm-build-4.3.3-7_nonptl: Scripts and executable programs used to build packages.
 - rpm-devel-4.3.3-7_nonptl: Development files for manipulating RPM packages.
 - rpm-libs-4.3.3-7_nonptl: Libraries for manipulating RPM packages.
 - rpm-python-4.3.3-7_nonptl: Python bindings for apps which will manipulate RPM packages.
 - rpmdb-SL-40-0.20050421: The entire rpm database for the "Scientific Linux" distribution.
 - rsh-0.17-25.1: Clients for remote access commands (rsh, rlogin, rcp).
 - rsh-server-0.17-25.1: Servers for remote access commands (rsh, rlogin, rcp).
 - rsync-2.6.3-1: A program for synchronizing files over a network.
 - ruby-1.8.1-7.EL4.0: An interpreter of object-oriented scripting language
 - ruby-devel-1.8.1-7.EL4.0: A Ruby development environment.
 - ruby-docs-1.8.1-7.EL4.0: Manuals and FAQs for scripting language Ruby.
 - ruby-libs-1.8.1-7.EL4.0: Libraries necessary to run Ruby.
 - ruby-mode-1.8.1-7.EL4.0: Emacs Lisp ruby-mode for the scripting language Ruby
 - ruby-tcltk-1.8.1-7.EL4.0: Tcl/Tk interface for scripting language Ruby.
 - rusers-0.17-41: Displays the users logged into machines on the local network.
 - rusers-server-0.17-41: Server for the rusers protocol.
 - rwho-0.17-22: Displays who is logged in to local network machines.