I've written an addon manager targeted at Linux WoW players and I'm looking for others to trial it and help me iron out any bugs, suggest features, etc.
It may work on Windows, but I don't have an instance to test it on.
You can find it here at github.com /ogri-la/wowman
Sorry for the mangled url, but I'm getting "You are not allowed to post any kinds of links, images or videos until you post a few times."