Free StackBuilder alternative: DimPack3D
StackBuilder is treeDiM's Windows palletizing and case-packing tool, part of the PLMPack packaging suite: it generates pallet patterns and truck loads from case dimensions and is popular with packaging engineers who want a desktop workflow.
DimPack3D covers the core workflow StackBuilder charges for — automatic 3D bin-packing, hand fine-tuning, and professional load-plan export — free, in the browser. Below is an honest comparison, including what StackBuilder does better.
DimPack3D (free)
- Real 3D bin-packing with weight & stacking limits — free
- Drag-edit any carton in 3D (snap, collision-blocked)
- PDF load plan + CSV packing list export
- Excel/CSV/paste import of your carton list
- Share links, saved plans, approval flow with audit trail
- Runs in the browser — nothing to install, no seats to count
- Computation stays on your device (plans upload only when you share/save)
StackBuilder
- Detailed palletizing patterns (interlocking, column, pinwheel) with case-packing analysis
- Integrates with the Picador CAD suite for packaging design drawings
- Desktop, offline workflow with no per-calculation quota
Pricing: treeDiM publishes StackBuilder as a free Windows download; the wider PLMPack/Picador CAD suite is commercial and quote-based per third-party listings. Verify current terms with treeDiM.
Choose StackBuilder if: you need the capabilities listed on their side above (they are real strengths), and the per-seat cost is justified by daily specialist use.
Choose DimPack3D if: you want the core container workflow — optimize, fine-tune, export, share, approve — without licenses, installs or training. Import your existing Excel and see your load in 3D in under a minute.
Try it with your own StackBuilder data
Paste or upload the carton list you already have — Excel, CSV, or straight from the clipboard — and see the same shipment packed in 3D. Nothing to install, no signup, and the numbers are computed in your browser.
80.2% average fill across 300 Bischoff–Ratcliff OR-Library instances, with ≥60% base support enforced on every box. Published heuristics report 83–95% under varying — often weaker — stability rules.
Saved plans, share links, and an approval flow with an audit trail — without counting seats.
Door aperture, axle loads, crush limits, overhang and load voids — checked before the truck leaves.
StackBuilder is a trademark of its owner; facts above are from public pages or attributed third-party listings as of September 2026. Corrections: [email protected].