Image Blocker is an IIS ISAPI Filter DLL that prevents other web sites from linking directly to your graphics and other resources resulting in lower bandwidth costs for you.
MailTune is a powerful enhancement for Windows Server 2003 SMTP/POP3 services which provides virtual user support and anti-spam filtering for incoming messages.
MailWrap virtually eliminates the ability for spammers to automatically harvest email addresses from your web pages while allowing seamless access for normal human users.
User Directories for IIS is an IIS ISAPI Filter DLL that web enables your Windows user accounts. This functionality has long been available on UNIX platforms and now it is available for the IIS web server.
User Errors for IIS is an IIS ISAPI Filter DLL that gives you flexible options for responding to web servers errors in a graceful manner. Don't let IIS throw up a standard error page when you can provide your own custom page.