LinkFreeze is a powerful tool to optimize dynamic or database-driven websites for search engines. Conveniently, you don't need to rewrite the code of your pages, as all your links are modified on-the-fly whenever a page is requested on the server.
This software is not reviewed yet.
ISAPI_Rewrite is Apache .htaccess mod_rewrite compatible URL rewriter for Microsoft IIS. It is used for search engine optimization, to reverse proxy another server's content, stoping hotlinking and strengthening server security.