Eclipse Guvnor Tools work with Drools Guvnor through rich web based GUIs and editors to provide a centralized repository for a vast quantity of rules. You can store versions of rules, models, functions, processes and other Drools generated components that all relate to executable knowledge bases. Access to the Guvnor is controlled, allowing you to lock down access and restrict features so domain experts (non programmers) can view and edit rules without being exposed to all the features at once.