From http://www.w3schools.com (Copyright Refsnes Data)

WAP Demo

Click on the cell phone to start the demo!

Compiling WML Code

To test and compile your WML code, you can download the Nokia Mobile Internet Toolkit for free. The Nokia Mobile Internet Toolkit supports the complete WAP 2.0 specification, including XHTML and CSS.

If you place WML code on your IIS or Apache server, you don't need to compile it. This is a job for the WAP Gateway. Simply host your native WML code on your server.

From http://www.w3schools.com (Copyright Refsnes Data)