Similar to SharpDevelop
Open Source Applications Foundation
Open Source Applications FoundationOpenCVS
OpenCVSOpenDarwin
Darwin (operating system)#OpenDarwinOpenDocument
OpenDocumentOpenDocument Format Alliance
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OpenEmbedded
OpenEmbeddedOpenJPEG
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OpenSSH
OpenSSH
OpenSSL
OpenSSLOpenVanilla
OpenVanillaOpenZaurus
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Open棟梁
OSDN Magazine
OSGeo財団
Open Source Geospatial FoundationPackageKit
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Pango
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PCMan File Manager
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PDF.js
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Penelope
Eudora OSE
Perl Compatible Regular Expressions
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Phonon (software)
PhpBB
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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)
