For Visual Studio Code, see this guide for more information. This information is for Visual Studio for Mac IDE.
Unity integration is included out of the box in Visual Studio for Mac, and starting from Unity 2018.1, Visual Studio for Mac is the default C# IDE for Unity projects. Visual Studio for Mac Tools for Unity is a free Visual Studio extension that turns Visual Studio for Mac into a powerful tool for developing cross-platform games and apps with the Unity platform. Select the runtime platforms of your choice from the list below (the desktop runtime is included as standard) or, to install the full complement of runtime platforms, use the download assistant installer above.
Hi, Is there any way with Unity 2018 that I can still use MonoDevelop (or can someone advise of another solution) instead of Visual Studio? It runs terribly on mac - lagging/constantly slow, fatal crashes at least once a day, the VS update corrupts VS and I have to reinstall again from Unity package (have tried this multiple times) Hey, it’s Microsoft - so not surprising it’s shocking.