Rational ClearQuest
Rational ClearQuest is a work-flow automation tool (in particular bug tracking system) from the Rational Software division of IBM. The tool can be linked to Microsoft Project to create ordered steps for resources assigned to specific goals.
The product was originally designed for tracking defects (bugs) in software development projects. Recently, however, many organizations have found its workflow customization capacity useful for off-market projects.
ClearQuest also integrates well with Rational ClearCase/UCM revision control system. This allows to correlate source code change sets with ClearQuest records (i.e. bugs), simplifying some aspects of bug tracking and source code management.
Despite being powerful and highly customizable system, it is often criticized for sluggish performance and cumbersome user interface.