The following outline is from the perspective of a non-doc-committer-committer who wants to see (our good) documentation get 10x better.
Finally:
Needs
| Name | Language | OpenSource | Free for OSS | Windows | Mac | Linux | FreeBSD | Port{s,able} | DocBook Support |
| oXygen DocBook Editor | Java | ✘ | ✘ | ✔ | ✔ | ✔ | ✔ | ✔ | 4, 5, ?? |
| XMLmind DocBook Editor | Java | ✘ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | 4, 5, 5.1 |
| LyX | C++, Python, QT | ✔ | N/A | ✔ | ✔ | ✔ | ✔ | print/lyx | ?? |
| Name | Language | OpenSource | Free for OSS | DocBook Support |
| XWiki | Java | ✔ | N/A | 4.4 |