What I would like to:
- Local, that is, all public on foreign hosting disappear (but with HTTP access, of course)
- (Not necessary, but desirable) integration with dokuwiki (there are built-in wiki engines, but full-featured dokuwiki is better, and it should work autonomously)
- Simple in all senses
- Perl (preferred) or PHP. If I want to add something, then on RoR or Python it will be more difficult for me to do it (4a: not every virtual hosting has Ruby or Python, but I should be able to install. Java is not considered at all) 
- From 4 follows - extensible (plugins etc) 
- Free.
While watching:
- Bugzilla I don’t like her for some reason, I just don’t like her :) But if you tell me about the advantages, it’s good :) 
- Mantis. I worked a lot with him, I know the offal well. Of the minuses - the nightmarish localization (for me, even English is normal, but ...), and it is too monstrous for my purposes. 
- Traq . Almost what you need: simple as 5 cents and smart. Of the minuses - the current version is not very customizable. For example, only with the help of dancing with a tambourine, you can throw out a roadmap and timeline, which are not needed at all. 
- Eventum The latest version released in 2009 ... 
- The Bug Genie Too monstrous :) 
What else to see?

Jira / Youtrack? - Costantino Rupert