From the documentation: KScope is a source-editing environment for KDE. Primarily, it is a front-end to the veteran Cscope, a source-code browser originally developed at Bell XLabs. Cscope works by parsing a set of source files, creating a cross- reference database, and allowing the user to query this database. KScope, however, extends the feature-set of Cscope with a contemporary user Xinterface, editor integration, project management capabilities, and multiple query result windows. WWW: http://kscope.sourceforge.net/