New Hierarchy Window

A Hierarchy window with a column system, reimplementing the "New Hierarchy" currently in preview in Unity 6.3+ for Unity 2022.3 / 6.0.

Open it from the Add Tab menu when right-clicking a window tab.

What You Can Do

• Tree view, two-way selection sync with the standard Hierarchy, and rename (F2)
• Drag & drop (reparenting, reordering, moving between scenes, placing prefabs from the Project window)
• Columns: Visibility / Picking / Active / Static / Layer / Tag / component icon column
  • Right-click the header to toggle columns; widths and order are saved
• Search (by name + t:TypeName), prefab override bars and added-object badges
• Settings from the gear icon in the header (scope of column edits, alternating row background, showing hidden objects)

Adding a Custom Column

You can register columns from outside the package with a static method marked with the [SCEHierarchyColumn] attribute:

[SCEHierarchyColumn("MyPackage/MyColumn")]
static void CreateColumn(SCEHierarchyColumnDescriptor d)
{
    d.Title = "My";
    d.DefaultWidth = 60;
    d.MakeCell = () => new Label();
    d.BindCell = (ve, ctx) => ((Label)ve).text = ctx.gameObject ? ctx.gameObject.tag : "";
}

About Unity 6000.3 and later

Because the official New Hierarchy exists there, the SCE version is automatically disabled.