protocols	Introduction to writing spiders and agents	downloading

Spiders can be written in nearly any language
1.	Java
2.	Perl
		http://www.cpan.org
3.	Tcl/Tk
		http://www.scriptics.com
		http://www.webtechniques.com/archives/2000/03/schrenk
4.	PHP
		http://www.php.html.net
5.	cURL
		http://curl.haxx.se
		http://curl.sourceforge.net