Context menu to Add Controller/View missing

Do nothing just update your MVC project. Fire this command in your Nuget Package Manager console.

Update-Package Microsoft.AspNet.Mvc

For people using MVC 5, add this key

{E3E379DF-F4C6-4180-9B81-6769533ABE47}; 

in the beginning of . The other guids won't work.

Are those only available to ASP.NET MVC template?

Yes, but you could cheat. The way Visual Studio shows those shortcuts is by looking at the project type and if it sees that it is an ASP.NET MVC project it will make them available. But how does it know it is an ASP.NET MVC project? After all ASP.NET MVC is an ASP.NET project.

Open the .csproj file and look for the <ProjectTypeGuids> node of your ASP.NET MVC 4 project. You will see something like this:

<ProjectTypeGuids>{E3E379DF-F4C6-4180-9B81-6769533ABE47};{349c5851-65df-11da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}</ProjectTypeGuids>

Now open the .csproj file of your regular ASP.NET project and simply add the {E3E379DF-F4C6-4180-9B81-6769533ABE47} GUID as first item in the list (if you don't project does not even load). That's all. Now you will see the ASP.NET MVC specific context menus in your WebForms project.

Step to change the GUID

1. Right click on the project in solution explorer
2. Click unload project
3. Right click again on the project in solution explorer
4. Edit projectfolder/projectname.csproj
5. Chagne GUID
6. Right click and select "Reload Project"

In <ProjectTypeGuids> tag add any of these GUIDs in beginning

{E3E379DF-F4C6-4180-9B81-6769533ABE47};

{E53F8FEA-EAE0-44A6-8774-FFD645390401};