ASP includes three separate debugging tools:
A powerful trace mode feature that enables both control and page developers to include instrumentation messages throughout their code.
A lightweight debugger that supports debugging only on the local computer; analogous to the Script Debugger provided with traditional ASP. This debugger is provided with the NGWS SDK.
A feature-rich debugging tool integrated with the Microsoft Visual Studio development environment. This tool provides several features over the SDK debugger, including support for debugging on remote computers , auto-attach to the ASP+ runtime, and the ability to edit source files within the debugger source window.