Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download uIntelliSense – Unity API Assistant Free.
uIntelliSense – Unity API Assistant v1.8.0.0
uIntelliSense – Unity API Assistant v1.7.2.0
Note: JavaScript/UnityScript is not supported.
uIntelliSense brings all the power of IntelliSense code hints to your Unity C# code.
Have you ever forgot the exact meaning of some method parameter, or stumbled upon a method you’ve never used before? Don’t you think that searching through Scripting Reference is way too much work when all you really have to do is to hover over the code with your mouse?..
And this is exactly what uIntelliSense is about, providing useful hints for the Unity API – descriptions for types, variables, methods, method parameters etc.
Once you’ll try it, you’ll get used to it immediately. It is extremely helpful and time-saving, especially if you are a beginner who doesn’t knows the Unity API very well.
Second part of uIntelliSense is a Visual Studio extension for Visual Studio 2012 and newer, for even better experience: in-IDE integrated Scripting Reference browser, Quick Search for Unity API and more! See details in the PDF manual below.
Unity 5.4 and newer is supported, both Windows and macOS editors.
Works in both MonoDevelop and Visual Studio. Visual Studio 2012 or newer is required for the extension to work. Visual Studio for Mac and Visual Studio Code are not supported.
uIntelliSense brings all the power of IntelliSense code hints to your Unity code. While coding, have you ever forgot the exact meaning of some method parameter, or stumbled upon a method you’ve never used before? The only option was to start your browser, open the Scripting Reference, find the type, find the method, and only then you’d finally be able to get what you’ve searched. But isn’t that way too much work when all you really have to do is just hover the cursor over the point of interest? And that is what uIntelliSense is about, providing useful hints for the Unity API — descriptions for types, variables, methods, method parameters etc. Once you’ll try it, you’ll get used to it immediately. It is extremely helpful and timesaving, especially if you are a beginner who doesn’t know the Unity API very well. Second part of uIntelliSense is a Visual Studio extension for Visual Studio 2012 and newer, for even better experience: in-IDE integrated Scripting Reference browser, Quick Search for Unity API and more! On macOS, uIntelliSense also downloads and installs missing documentation for nonUnity .NET classes to further improve the experience. Unity versions 4.7.x – 5.x are supported, both Windows and macOS Unity editors. Pro license is not required. Works with both MonoDevelop and Visual Studio. All Visual Studio versions are supported for IntelliSense hints, Visual Studio 2012 or newer is required for the extension.
You might be prompted with a UAC administrator privilege request dialog on Windows, or an administrator rights request on macOS. This is required because uIntelliSense has to create a few files inside you Unity installation. This can’t harm neither your Unity installation nor your computer in any way — only a few files containing the documentation data are created. Restart your IDE when the process is finished. That’s it! You should be able to see the code hints now. Just hover the cursor over a Unity API type or type member. Note that uIntelliSense uses Unity documentation, so it can’t show anything that wasn’t present in the documentation in the first place. You can safely delete uIntelliSense directory from your project when the process is complete – hints are not tied to a specific project, they will be used automatically everywhere. The exception to this is if you are using Visual Studio Tools for Unity (formerly known as UnityVS) — you’ll have to leave uIntelliSense directory in your project because of a workaround required for correctly managing projects created by Visual Studio Tools for Unity. Click “Install Visual Studio Extension” button to install the Visual Studio Extension. You can read more about it in the next section. Use the dropdown triangle menu to uninstall uIntelliSense data or visit the support forum thread.