Similar to 中国人民解放軍国防大学軍事文化学院

OpenBitTorrent

OpenCores

OpenDaylight Project

OpenEmbedded

Openmoko

OpenRC

OpenRefine

OpenServer

The openSUSE Project

Optics Express

Optics Letters

Orca (assistive technology)

ORCA (quantum chemistry program)

ORCID

OSDN

Otter (software)

OW2

PAOK FC

Pardus (operating system)

PDFtk

Polis Diraja Malaysia FC

Phabricator

PhotoRec

Physics of Plasmas

PICO-8

Piwigo

Pixel 5

Pixel 5a