The Live OWL Documentation Environment (LODE) is a tool (available online) I developed to generate automatically HTML documentation of OWL ontologies starting from their axioms and annotations. Developed in principle to expose quickly the documentation of the SPAR ontologies, it is now a quite stable tool adopted in different initiatives, such as the W3C Recommendation of the PROV Ontology and the PAV (Publication, Authoring and Versioning) ontology among others.
Recently we (Fabio Vitali, David Shotton and I) performed some user testing sessions to assess the usability of LODE. Those tests involved LODE, of course, and other Web-available ontology documentation (i.e. Parrot and Ontology Browser) and ontology engineering tools (WebProtégé).
The outcomes of those experiments are very encouraging and show how LODE was perceived more usable than other tools by users when addressing tasks involving the understanding and browsing of OWL ontologies.
For more information, a complete description and discussion of the outcomes of these user testing sessions are introduced in our paper entitled Tools for the automatic generation of ontology documentation: a task-based evaluation, to appear in the Special Issue on Visualisation of and Interaction with Semantic Web Data of the International Journal on Semantic Web and Information Systems.