2.81 - Winamp
Skinning cost exactly zero CPU overhead. It was just a bitmap swap. Compare to modern CSS-skinned apps (Electron) where a UI redraw can take 50ms.
And when you closed it, you never saw that logo again. Until you double-clicked an MP3. And it woke up instantly. No splash screen. No "checking for updates." Just music. winamp 2.81
is why engineers still whisper "2.81" with reverence. Skinning cost exactly zero CPU overhead