One of the neat things about repos in Fossil (the DVCS by drh of SQLite fame) is that they have a built-in wiki and issue tracker whose contents are version controlled along with everything else in a project's repo. The Fossil executable also has a built-in web server that presents a web interface for working with the repo, including the issue tracker and wiki.
In short, if you have a project's Fossil repo, you can work on everything locally, then push source, wiki, and issue tracker changes to a central repo at your leisure.