SmE CLoak Page lite is a dynamic cloaking script that will generate pages based on the url that search engines crawl . Since the script never actually creates the pages,never you use extra disk space.
The simpleauth package is a scheme for allowing users to register a new account on a website. The package uses PHP sessions and a single MySQL table to track users. The system is very, very simple and aimed at beginning PHP users who wish to learn how to allow multiple users to login on their own site. As such the scripts are documented clearly with many comments so you can learn from the scripts.
PHP-Link Trader allows you to easily trade links with other sites. It keeps track of all incoming and outgoing hits and ranks the sites based on how many visitors they send to your site.
Net Encoder Pro is a powerful real-time HTML encoder, combining the technologies of PHP and JavaScript. Net Encoder encodes your web pages with one of 2 encoding methods when visitors "hit" your site, adding up to 9 additional security mechanisms. The system screens each visitor against an included database of search engine spiders, and leaves pages completely untouched for them, so your pages can still be indexed and listed.