ScriptWiz.com Offers hundreds of free and commercial scripts to improve your website. The site also offers tutorials as well as a breakdown of scripts by date, most popular and top ranked.
ScriptsFinder.com Offers hundreds of free and commercial scripts to improve your website.
If your site is one of the 12 million domains using the PHP scripting language, then PHP.net is a good place to find PHP related information. Links to resource sites, tutorials, manuals, books and much more.
CGI City Provides a one-stop-shop for people with CGI needs. The site offers a wide variety of free and shareware scripts as well as CGI tips, tutorials, news and references.