Package list: page 563
- orc
- orca
- orca-sops
- orcania
- orchis-theme
- ordered-clojure
- ordered-map
- orderless
- orderly-set
- oregano
- org-appear
- org-bullets
- org-caldav
- org-contrib
- org-d20
- org-drill
- org-make-toc
- org-mode
- org-mode-doc
- org-present
- org-roam
- org-tree-slide
- orgadoc
- organicmaps
- organize
- ori
- origami
- origami-pdf
- original-awk
- ormar
- oroborus
- orocos-bfl
- orocos-kdl
- orp
- orp-classpath
- orphan-sysvinit-scripts
- orpheus
- orpie
- orsa
- orson-charts
- orsopy
- orthanc
- orthanc-dicomweb
- orthanc-gdcm
- orthanc-imagej
- orthanc-mysql
- orthanc-neuro
- orthanc-postgresql
- orthanc-python
- orthanc-webviewer
- orthanc-wsi
- ortp
- orville-write
- os-autoinst
- os-prober
- os8
- osc
- osc-plugins-dput
- oscache
- oscar