Freeware: Isapi

ETagFix 1.00ETagFix is an Isapi plugin which integrates directly into IIS and other web servers to alter the etag that IIS produces so that web crawlers will not check your web site so often.

www-Sharp.Runtime 1.08In-process web-server implemented as asynchronous pluggable protocol with support for PHP, ASP.Net and Isapi . Can run PHP, ASP.Net applications in trusted mode (as HTA). Requires Internet Explorer 5.5 or higher.

Fastream NETFile FTP/Web Server 8.3.0Secure, ultra-fast FTP server and robust multi-threaded Web server for Windows 2000/XP/2003/Vista, featuring XML-based GUI remote 2-level administration scheme, separate upload/download speed limits, storage quotas, dynamic DNS, and compression.

Fastream IQ Web/FTP Server 11.4.6RSecure (256-bit SSL) ultra-fast multi-threaded FTP and Web server for Windows 2000/XP/2003/Vista, featuring XML-based GUI remote 2-level administration scheme, separate upload/download speed limits, storage quotas, dynamic DNS, SSL and compression.

Abyss Web Server X1 2.0.6Abyss Web Server X1 is a free and compact personal web server for Windows, MacOS X, Linux, and FreeBSD. It supports HTTP/1.

CGI Expert Free (Delphi) v4.51is a Delphi component that simplifies CGI and Win-CGI server programming, making it easy to generate dynamic HTML.

CGI Expert Free (C++ Builder) v4.51is a Borland C++ component that simplifies CGI and Win-CGI server programming, making it easy to generate dynamic HTML.