The alternatives we can use are as follows:

Release:

A replacement for stable channels used for Visual Studios used on the Mac.

Preview:

is also an alternative to the Alpha channel and Beta channel used for Visual Studios used on the Mac operating system .The Preview version of Visual Studio, which can be used on the Mac operating system, includes some versions and features. These versions and features are as follows:- Xamarin.Forms- Xamarin.Ios- Xamarin.Android - Xamarin Profiler- Xamarin Inspector

Xamarin Remote ios Simulator

Note:

When installing the Xamarin Preview version in Visual Studio, you can add the installation Nickname at the same time as installing the other versions, so that it can be displayed separately in the start menu.

How to install Preview in Visual Studio version 2019?

Note:

In order to be able to install the Preview in Visual Studio well, you must also remove some versions of the Preview. You can use visual studio installer to remove some versions of Preview.

How to remove some Preview versions from Visual Studio?

Using the Installer app, you can easily remove Xamarin from Visual Studio 2017 and Visual Studio 2019.1- Open the start menu.2- Select the Visual Studio Installer menu and click.3- In the window that opens to select the changes, select the Modify button and click.4- In the Workloads tab that opens, uncheck Mobile Development with .NET in the Mobile & Gaming section. This is called de-select.5- Click the Modify button again.6- De-select options are removed automatically by default by the Installer.

Note:

In order for the changes applied by the Installer to be recorded, Visual Studio 2017 must be closed.7- In order to be able to delete other options such as profiler and workbooks, you must refer to the Individual Components tab.8- In order to be able to completely remove Visual Studio, you must click on the three-line button next to the launch button to display the Uninstall option, and you can easily uninstall Visual Studio 2017. 

Read more on:https://www.dotnek.com/Blog/Apps/how-to-install-xamarin-preview-in-windows-and

link:https://dotnek.mystrikingly.com/

Related link:DotNek iOS Development