Porting dot net application to Linux using Mono VS Addin

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VS2008

C#

Linux

We have a dot net application developed for Windows OS. I have a task to port the application to Linux. I understand we can use Mono in Linux to run dot net applications. I ran MoMA on our code and found various incompatibilities. I also found that there is a Mono Visual Studio Addin

https://www.novell.com/connectionmagazine/2010/02/img/mono1.jpg

which gets integrated with Visual Studio. My idea is to use the mono addin and fix all the incompatibilities in development environment and then copy the application to the Linux environment. But my question is, from where can I download the Mono Addin for Visual Studio 2008? I followed this link

https://www.novell.com/connectionmagazine/2010/02/mono_tools.html

and downloaded and installed the Mono tools mentioned in step 1.It installed a bunch of Android, Java SDKs, but it didnt install the Mono Addin or any Mono related integration tools for Visual Studio 2008. Can some one please correct if I am proceeding in the right direction and If so please provide me the link to download the necessary integration tools for VS 2008.

Thanks