Similar to Ruby
Openbox
Openbox
OpenBSD
OpenBSD
OpenLDAP
OpenLDAPOpenSC
OpenSC
OpenSSH
OpenSSH
OpenSSL
OpenSSL
OpenVPN
OpenVPN
OpenVZ
OpenVZ
Opkg
PackageKit
PackageKit
Pango
PangoPARI/GP
PARI/GP
Pcap
Pcap
PCMan File Manager
PCMan File Manager
PCSX
PhotoRec
PhotoRec
Pidgin
Pidgin (software)Pluma
Pluma (text editor)
Polkit
PolkitPortAudio
PortAudioPremake
Premake
Privoxy
Privoxy
ProFTPD
ProFTPD
PSPP
PSPP
PulseAudio
PulseAudio
PuTTY
PuTTY
Qmail
QmailQMK
QMK