DomainAv is PHP script that can check domain availability against various extensions. It can also display a list of domain suggestions based on the searched domain. You can select which extensions you want to show and set number of suggestions. This script has an integrated domain affiliate system through which you can offer your domain registrar referral URL directly to the visitors. There are multiple ad slots for ad monetization as well. The script is super optimized for search engines. You can set almost all required meta tags in all pages. There is a built-in sitemap that tells search engines which domains were searched in your site. You can customize your website through its powerful admin panel and you will be amazed to see how customizable the script is.