Trac has all that and more, especially using plugins. It is highly configurable also. The downside is that it's done in python with old-school approaches...no a

Trac has all that and more, especially using plugins. It is highly configurable also. The downside is that it's done in python with old-school approaches...no ajax or anything like that. jira&friends-If you need less than 10 users, each of the apps will cost you 10$ (for life). It's heavier than trac, but its web2.0 so very practical to use. Jira is also much better than trac to manage tickets so I'm happy to have transioned to Jira for my new projects