Letter: O
- OpenEXR - A high dynamic-range (HDR) image file format
- OpenEXR-devel - Headers and libraries for building apps that use OpenEXR
- obby - A library which provides synced document buffers
- obby-devel - Development libraries for obby
- ocaml - Objective Caml compiler and programming environment
- ocaml-calendar - Objective Caml library for managing dates and times
- ocaml-calendar-devel - Development files for ocaml-calendar
- ocaml-camomile - Unicode library for OCaml
- ocaml-camomile-data - Data files for ocaml-camomile
- ocaml-camomile-devel - Development files for ocaml-camomile
- ocaml-csv - OCaml library for reading and writing CSV files
- ocaml-csv-devel - Development files for ocaml-csv
- ocaml-curses - OCaml bindings for ncurses
- ocaml-curses-devel - Development files for ocaml-curses
- ocaml-docs - Documentation for OCaml
- ocaml-emacs - Emacs mode for Objective Caml
- ocaml-extlib - OCaml ExtLib additions to the standard library
- ocaml-extlib-devel - Development files for ocaml-extlib
- ocaml-findlib - Objective CAML package manager and build helper
- ocaml-findlib-devel - Development files for ocaml-findlib
- ocaml-gsl - Interface to GSL (GNU scientific library) for OCaml
- ocaml-gsl-devel - Development files for ocaml-gsl
- ocaml-libvirt - OCaml binding for libvirt
- ocaml-libvirt-devel - Development files for ocaml-libvirt
- ocaml-ocamldoc - Documentation generator for OCaml
- ocaml-omake - OCaml build system with automated dependency analysis
- ocaml-xml-light - Minimal XML parser and printer for OCaml
- ocaml-xml-light-devel - Development files for ocaml-xml-light
- ocsinventory-agent - Open Computer and Software Inventory Next Generation client
- octave - A high-level language for numerical computations
- octave-devel - Development headers and files for Octave
- octave-forge - Contributed functions for octave
- odfpy - Python library for manipulating OpenDocument files
- odt2txt - Converts an OpenDocument to plain text
- ofx - Tools for manipulating OFX data
- ogdi - Open Geographic Datastore Interface
- ogdi-devel - OGDI header files and documentation
- ogdi-odbc - ODBC driver for OGDI
- ogdi-tcl - TCL wrapper for OGDI
- oggvideotools - Toolbox for manipulating Ogg video files
- oneko - Cat chases the cursor
- onesixtyone - An efficient SNMP scanner
- ooo2txt - Convert OpenOffice documents to simple text
- openal - Open Audio Library
- openal-devel - Development files for openal library
- openser - Open Source SIP Server
- openser-acc_radius - Accounts transactions information with radius support
- openser-auth_diameter - Performs authentication using a Diameter server
- openser-auth_radius - Performs authentication using a Radius server
- openser-avp_radius - Allows loading of user's attributes into AVPs from Radius
- openser-carrierroute - Routing extension suitable for carriers
- openser-cpl-c - Call Processing Language interpreter
- openser-db_berkeley - Berkley DB backend support
- openser-group_radius - Functions necessary for group membership checking over radius
- openser-h350 - H350 implementation
- openser-jabber - Gateway between OpenSER and a jabber server
- openser-ldap - LDAP connector
- openser-mysql - MySQL Storage Support for the OpenSER
- openser-perl - Helps implement your own OpenSER extensions in Perl
- openser-perlvdb - Perl virtual database engine
- openser-postgresql - PostgreSQL Storage Support for the OpenSER
- openser-presence - Presence server
- openser-presence_mwi - Extension to Presence server for Message Waiting Indication
- openser-presence_xml - SIMPLE Presence extension
- openser-pua - Offer the functionality of a presence user agent client
- openser-pua_bla - BLA extension for PUA
- openser-pua_mi - Connector between usrloc and MI interface
- openser-pua_usrloc - Connector between usrloc and pua modules
- openser-pua_xmpp - SIMPLE-XMPP Presence gateway
- openser-rls - Resource List Server
- openser-seas - Transfers the execution logic control to a given external entity
- openser-sms - Gateway between SIP and GSM networks via sms
- openser-snmpstats - SNMP management interface for the OpenSER
- openser-tlsops - TLS-relating functions for the OpenSER
- openser-unixodbc - OpenSER unixODBC Storage support
- openser-uri_radius - URI check using Radius server
- openser-xcap_client - XCAP client
- openser-xmpp - Gateway between OpenSER and a jabber server
- openslp - Open implementation of Service Location Protocol V2
- openslp-devel - OpenSLP headers and libraries
- openslp-server - OpenSLP server daemon
- openvpn - A full-featured SSL VPN solution
- openvpn-auth-ldap - OpenVPN plugin for LDAP authentication
- optipng - A PNG optimizer and converter
- osslsigncode - Tool for Authenticode signing of EXE/CAB files
- otrs - The Open Ticket Request System
- ovaldi - Reference implementation of the OVAL interpreter