Unity lets you extend the editor with your own custom inspectorsA Unity window that displays information about the currently selected GameObject, asset or project settings, allowing you to inspect and edit the values. More info
See in Glossary and Editor Windows and you can define how properties are displayed in the inspector with custom Property DrawersA Unity feature that allows you to customize the look of certain controls in the Inspector window by using attributes on your scripts, or by controlling how a specific Serializable class should look More info
See in Glossary. This section explains how to use these features.