CodeQuery is a tool for indexing and then querying or searching C, C++, Java,
and Python source code. It builds upon the databases of cscope and ctags, which
are processed by the cqmakedb tool to generate a CodeQuery database file. This
can be viewed and queried with a GUI tool. The features include auto-completion
of search terms and visualization of function call graphs and class
inheritance. The following queries can be made: Symbol, Function or macro,
Class or struct, Functions calling this function, Functions called by this
function, Class which owns this member or method, Members and methods of this
class, Parent of this class (inheritance), Children of this class
(inheritance), Files including this file, and full path for file.