| Class | UsesBugsDistributionVocabulary | Distributions that use Launchpad to track bugs. |
| Class | BugVocabulary | Undocumented |
| Class | BugTrackerVocabulary | All web and email based external bug trackers. |
| Class | WebBugTrackerVocabulary | All web-based bug tracker types. |
| Function | project_products_using_malone_vocabulary_factory | Return a vocabulary containing a project's products using Malone. |
| Class | BugWatchVocabulary | Undocumented |
| Class | DistributionUsingMaloneVocabulary | All the distributions that uses Malone officially. |
| Function | BugNominatableSeriesVocabulary | Return a nominatable series vocabulary. |
| Class | BugNominatableSeriesVocabularyBase | Base vocabulary class for series for which a bug can be nominated. |
| Class | BugNominatableProductSeriesVocabulary | The product series for which a bug can be nominated. |
| Class | BugNominatableDistroSeriesVocabulary | The distribution series for which a bug can be nominated. |
| Function | milestone_matches_bugtask | Return True if the milestone can be set against this bugtask. |
| Class | BugTaskMilestoneVocabulary | Milestones for a set of bugtasks. |