This module is no longer under active development.
Bugbits is a module that allows some integration between Drupal and the popular open source bug tracking software Mantis. Bugbits is starting to become more mature but there is much left to do.
The module in it's current state only allows single login between mantis and Drupal. We currently working on updating this module to Drupal 6 and developing a roadmap for more a robust feature set and mantis API level integration.