With IIS Mod-Rewrite Pro you can manipulate URLs on the fly, make your website search engine friendly, make redirects, block specific URLs, block annoying robots and a lot more.
IIS Mod-Rewrite is rule based and supports regular expressions. It is 100% compatible with apache mod_rewrite implementing all its features.
IIS Mod-Rewrite Pro supports per-server, per-virtual host, per-directory, and override (.htaccess) configurations, and it works with IIS 6.0 and 7.0.
Also, it comes with a feature rich control panel that includes online updates, version rollback, diagnostics, regex tester, and a lot more settings and tools.