ASP.NET Documentation Tool 

The ASP.NET Documentation Tool creates documentation for ASP.NET projects written in VB.NET and C#. Reports are created in standard HTML, Microsoft HTML Help and plain text formats. Includes documentation, Premium Edition contains source code.
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Unitix Site Documentor 

The Unitix Site Documentor is a valuable tool for documenting your website development projects. It automatically scans and analyses your project and compiles a complete documentation framework, leaving only the descriptions for you to fill in.
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