SmartUndo+

Ctrl+Z rewinds the whole scene, one step at a time. SmartUndo+ gives every object — its own undo history — so fixing one thing never costs you another.

Fixing one thing shouldn’t undo another.

Blender's normal undo rewinds everything in the scene, one global step at a time. Make five small changes to one object while also fixing something else and undoing back to that object means undoing the other work too.

Every object, every aspect.

Point at an object or a node tree and undo just that. Each aspect below keeps its own independent track.

See exactly what changed.

A clear step-by-step timeline per object, grouped by aspect — not just a single “step back”. Select the sofa, a light, a table, a plant — the panel always shows that one object's own history.

Every kind of change. Tracked per object.

Point at any object and its own history is right there — whatever you changed. A sofa's modifier and material colour, a light's energy and colour, a table's position and a custom property, a plant's constraint. Every one on its own track.

Save a state. Come back to it.

Apart from the automatic timeline, save named checkpoints on purpose — for a single object, or for the whole scene at once. Try a bold variation and if it doesn't work out, restore any checkpoint in one click. They're kept in the .blend when you save the file.

Quiet by design. Blazing fast.

Your whole history lives in RAM — the same place Blender keeps its own undo — so stepping or jumping to any state is instant, just like a normal Ctrl+Z. No disk, no waiting; it only writes to your .blend if you choose to save it. And it records a step just once, after a value settles — not on every tick — so it never slows down modeling, sculpting or animating, even on large, complex scenes. You won't notice it's there until you need it.

Selecting a character rig used to cost you frames. As of 1.35.1 the background scan fingerprints each animation channel and only snapshots the ones that actually moved — a 900-curve rig went from 190 ms a pass to 12. Adding more rigs no longer makes it worse. The panel’s RAM figure moved off the redraw path in the same release: editing with the panel open went from +499 ms a frame to +1.5.

As of 1.35.3 the same idea reaches the undo itself. Channels carry fingerprints, so a native undo re-syncs by comparing signatures instead of walking keyframes — a deep history steps back in a couple of lookups, not a full scan. Panel redraws stop re-reading thousands of channel names, the first poll of a big rig is sliced across ticks instead of one long stall, sculpt strokes reuse the previous step’s geometry buffers. Saving pre-warms in the background. Measured with a 900-curve rig and the panel open, each redraw is about half the work it was. Same histories — nothing is lost for speed.

As of 1.36.0 the biggest remaining costs are gone. Checkpoints on a 2000-object scene dropped from 4.1 s to 0.14 s, undo on a dense mesh is back to milliseconds — 270 to 6 ms in Edit mode on 100k vertices — and an F-curve undo with 10 000 keys went from 206 to 6 ms. Panel redraws are about 7× faster and saving a large history is twice as fast. Same histories — nothing is lost for speed.

Five steps.

Not a replacement. A second layer.

Worth being upfront about, so you know exactly what you're installing.

Everything, packed.