CodeCrawler - an information visualization tool for program comprehension. CodeCrawler is a language independent, interactive, information visualization tool. It is mainly targeted at visualizing object-oriented software, and has been successfully validated in several industrial case studies over the past few years. CC adheres to lightweight principles: it implements and visualizes polymetric views, visualizations of software enriched with information such as software metrics and other source code semantics. CC is built on top of Moose, an extensible language independent reengineering environment that implements the FAMIX metamodel. In its last implementation, CC has become a general-purpose information visualization tool.