Starting from Confluence 4.0, 'wiki' markup language was removed in favor of rich edit. But in my company developers don't like rich edit and want to us familiar markup plain text editor. Is it possible to re-enable wiki markup editing in Confluence? Maybe some addons or modifications exists? It's ok for not 100% conversion between markup and internal omg-woot-xml representations - most of documents has simple layout and for hard cases rich edit can be used.
If you want to work with wiki markup all you have to do is press Ctrl+Shift+D, while editing a page, and it will open a wiki-markup window.
I don't know of any add-ons which allow anything beyond that, but there could be some in the future.