Is a webserver software included in Windows XP?

Windows XP Home Edition doesn't include a webserver software. You can download XAMPP, a free software package instead. It includes the Apache webserver as well as support for PHP, Perl, and SSI. This package has not the ability to run Active Server Pages (ASP), but C# (ASP.NET) can be run under Apache using Mono.

Windows XP Professional already include Internet Information Server (IIS) 5.1 and support ASP/ASP.NET.