When u view a project properties in Visual Studio u get a number of tabs.
The standard ones are “Application”, “Build”, “Build Events” etc.
It is also possible to add custom tabs. For example view the properties of a WebApplication or a VSIX project you get different (extra) tabs.
So how do I write a VSIX addin that adds a custom tab to the project properties windows?
Check out this article: How to: Add and Remove Property Pages.
You create a page like so:
And you register it like so: