TrackStudio is a hierarchical Java-based issue tracking and bug tracking system. It includes per-project workflows, user role specific actions, filters, notification rules, subscriptions, access control lists, and reports. Both hierarchical categorization and cross-cutting views of your issue space are provided.

Changes

The permissions and admin UI have been reworked. Many bugs were fixed.

URL: TrackStudio -- Hierarchical Issue Tracking and Bug Tracking Software