Server technology developed by Microsoft that might be more welcomed in the open-source community alongside PHP if it were not tied down to IIS, a webserver also developed by Microsoft requiring Windows and with a less than desirable security history.
The latest release of ASP integrates with Microsoft's .NET technology.
I might consider ASPif it were more supported on Apache.
Extremely poisonous, the asp was often used as a means of execution for criminals who had attained a favored status and were thought deserving of a death more dignified than typical executions.