http://math.berkeley.edu/~ilya/software2/emacs/ Ilya Zakharevich emacs cperl cperl-mode
http://ctags.sourceforge.net ctags, 也有 perl
google navigate or cross reference
http://www.perldoc.com/perl5.8.0/pod/perlfaq3.html perlfaq3 Programming Tools IDE
http://www.oreillynet.com/pub/a/network/2003/04/29/steveoaulline.html Electronic Archaeology 程式工具, 有介紹 ctags vim