1. ocaml-fdkaac
2. octave-brain2mesh
3. octave-iso2mesh
4. octave-jnifti
5. octave-jsonlab
6. odpic
7. openboard
8. opendict-lingvosoft
9. openh264
10. openjazz
11. openjk
12. openmw
13. openrct2
14. openrct2-objects
15. openrct2-openmsx
16. openrct2-opensfx
17. openrct2-title-sequences
18. openrocket
19. opentyrian
20. openvr