Exuberant Ctags offers the following features: 1. It supports the following languages: Assembler, AWK, ASP, BETA, Bourne/Korn/Z Shell, C, C++, C#, COBOL, Eiffel, Erlang, Fortran, Java, Lisp, Lua, Makefile, Pascal, Perl, PHP, PL/SQL, Python, REXX, Ruby, Scheme, S-Lang, SML (Standard ML)