PSTRUH Software
- Developer of ISAPI filters and COM objects for IIS, including IIS Tracer, URL Replacer, and PureASP Upload.
- http://www.motobit.com/

SqueezePlay
- A real-time software compressor for Microsoft IIS (Internet Information Server). SqueezePlay lets you make much fuller use of your web-server's outgoing bandwidth, achieving as much as 10 to 1 reduction in data size.
- http://www.innermedia.com/sp/

Admin Report Kit for Internet Information Server (ARKIIS)
- Enterprise systems management software utility that helps you remotely monitor & manage Microsoft Windows NT/2000/XP based IIS servers.
- http://www.vyapin.com/products/enterprisenetworktools/arkiis.htm

IISGate
- High-performance web site authentication, password protection, and user management for IIS.
- http://www.iisgate.com

Server Automation Tools
- Tools for IIS logfile management, ODBC datasource reporting, IIS site reporting, among others.
- http://www.serverautomationtools.com/

ISAPI_Rewrite
- Change the URL scheme of web site transparently for users and web applications, uses regular expressions to match an incoming request and to change request's URI. The expression engines allows the handling of many different requests though a single rule.
- http://www.isapirewrite.com/

PipeBoost
- HTTP Compression software for Microsoft IIS 4.0, 5.x. PipeBoost is add-on application for Microsoft Internet Information Server. Reduces bandwidth consumption and improves client download speeds.
- http://www.pipeboost.com/

Active Server Manager
- Web site administration software for IIS. By Virtual Business Link LLC.
- http://www.asppages.net/asmapp/

AuthentiX
- Authentication and membership system for IIS. By Flicks Software.
- http://www.flicks.com/flicks/authx.htm

Port80 Software
- Developers of Microsoft IIS Web software tools for acceleration, security, and usability.
- http://www.port80software.com/