HAMweather 3 ASP is written in Perlscript, thus the windows server must still have Active State Perl installed. Note that HW3 ASP does not use VBscript.  The usage of Perlscript in HW3 asp provides the following benefits:

• Tests have shown that  the use of Perlscript in ASP for HAMweather, was found to be much faster than the VBscript equivalent. This is due to the large amount of string processing required by HAMweather, which is one of Perlscript's strengths and one of VBscript's main weaknesses.
    
• Using Perlscript allows for easier porting from HW3perl to HW3asp. Actually HW3perl and HW3asp can be used together in a single installation! If you currently have a HW3perl installation then you ready to start using HW3 asp as they use the exact same templates, thus there is no need to make any further template customizations.
   
• Most plug-ins written for HW3perl will work seamlessly in HW3asp. This includes the HW3image plug-in.
   
• Since ASP allows for the switching between languages, there is potential to allow future plug-ins for HW3asp to be written in other ASP scripting languages such as VBscript or Jscript.

For users of ASP.Net: Some initial work has began on porting of HW3 to ASP.Net.  This port will most likely be a port to the C# language.