Cscope

cscope is a programming tool which works in console mode, text-based interface, that allows computer programmers or software developers to search source code of the programming language C, with some support for C++ and Java. It is often used on very large projects to aid code comprehension to find source code, functions, declarations, definitions, and regular expression. cscope is free and released under a BSD license. The original developer of cscope is Joe Steffen.