Shorter than the general list, because the Mac question removes several options and adds one that most guides miss.

ToolMac nativeCommercial useBest at
BlenderYesUnrestrictedModelling, rendering, fabric
TwinmotionYesBelow revenue thresholdPhotoreal rendering
Sweet Home 3DYesYesSimple 2D plans
SketchUp FreeBrowserNoFast layout
FreeCADYesYesParametric, engineering-led
AutoCAD / RhinoYesStudents onlyEverything, if eligible

The short answer

Blender, again, and more decisively on a Mac: native on Apple Silicon, free forever, no commercial restriction, and Cycles now renders through Metal rather than falling back to the processor. Around it, Twinmotion is free below a revenue threshold and genuinely photoreal, Sweet Home 3D covers simple 2D plans, FreeCAD covers parametric work, and SketchUp Free runs in the browser but is not licensed for commercial use. The cost is months of learning — worth checking honestly against your hourly rate before calling it a saving.

Blender is the answer for most people

Native on Apple Silicon, free forever, no commercial restriction, and Cycles now renders through Metal rather than falling back to the processor. For modelling, rendering and particularly fabric work it is genuinely professional software that happens to cost nothing.

The cost is months of learning. Be honest about whether your hourly rate makes that a saving.

Twinmotion, if you qualify

Native, current, photoreal, and free below certain annual revenue thresholds. If you are eligible this is the best free thing on the page by a distance — a real rendering engine rather than a limited trial. Verify the current threshold before building a workflow on it.

What the Mac removes

Two of the commonly recommended free-ish options do not exist here. Lumion and D5 Render are Windows only, and both appear on general free-software lists without that caveat. If a list recommends them to Mac users, it was not written by anyone using a Mac.

The licences nobody advertises

AutoCAD for Mac, Rhino and V-Ray are all free to verified students and educators. Full versions, renewable while you qualify. This is the most valuable item here and the least well publicised.

Claim everything you are eligible for now — it cannot be claimed retroactively.

What free cannot do on a Mac

Being honest about the ceiling is more useful than another list of tools. Three things are simply not available free on macOS, and knowing which of them you need decides whether the free stack is a plan or a delay.

  • Revit. No macOS version at all, free or paid. If BIM deliverables are required, the answer is a Windows machine or virtualisation, not a different free tool.
  • Lumion and D5. Both Windows-only, so the two real-time engines most often recommended in tutorials are unavailable to you regardless of budget. Twinmotion is the free answer here, and it is a good one.
  • A free commercial 2D drafting tool of AutoCAD’s calibre. This is the genuine gap. LibreCAD and FreeCAD exist and are usable, but a DWG-native package with the plotting and layer control a client set expects is a paid product on any platform.

So: modelling, rendering and presentation can be done free and professionally on a Mac. Documentation is where the money eventually goes, and it is worth planning for that rather than discovering it a week before a package is due.

The gap

There is still no good free option for professional construction documentation on any platform, Mac included. If your deliverable is a drawing set, that is where paid software earns its cost. Alternatives are covered in software costs compared.

For the full picture of what runs on macOS, see best interior design software for Mac.