Blender

Blender packs an entire 3D pipeline — modeling, sculpting, animation, simulation, compositing, rendering — into one window organized by Workspace tabs across the top, each a preset arrangement of editor panels. Its interface is famously keyboard-first: many actions live on hotkeys and a context world, which makes experts extraordinarily fast and beginners initially lost. Every panel is an 'editor' you can split, join, and swap, so the layout is itself a malleable document. Properties live in a tabbed stack of context-sensitive sections, trading discoverability for density. Recent versions softened the curve with left-click selection and clearer gizmos, but the core trade remains: near-infinite capability surfaced through a dense, modal interface that rewards investment over first-run ease.