Similar to Perl_Compatible_Regular_Expressions

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  OpenDarwin

  Darwin (operating system)#OpenDarwin
  
• 

  OpenDocument

  OpenDocument
  
• 

  OpenDocument Format Alliance

  OpenDocument Format Alliance
  
• 

  OpenEmbedded

  OpenEmbedded
  
• 

  OpenJPEG

  OpenJPEG
  
• 

  OpenSSH

  OpenSSH
  
• 

  OpenSSL

  OpenSSL
  
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  OpenVanilla

  OpenVanilla
  
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  Open棟梁

  
• 

  OSDN Magazine

  
• 

  OSGeo財団

  Open Source Geospatial Foundation
  
• 

  PackageKit

  PackageKit
  
• 

  PCMan File Manager

  PCMan File Manager
  
• 

  PDF.js

  PDF.js
  
• 

  PekWM

  
• 

  Penelope

  Eudora OSE
  
• 

  Phonon

  Phonon (software)
  
• 

  PhpBB

  PhpBB
  
• 

  PhpMyAdmin

  PhpMyAdmin
  
• 

  Pico (テキストエディタ)

  Pico (text editor)
  
• 

  Pidgin

  Pidgin (software)
  
• 

  Piwigo

  Piwigo
  
• 

  Pixie (ソフトウェア)

  
• 

  Plasma (KDE)

  KDE Plasma
  
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  Poderosa

  
• 

  Poppler

  Poppler (software)
  
• 

  PostGIS

  PostGIS
  
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  Premake

  Premake