OrcaSlicer
OrcaSlicer: A free, advanced FDM slicer with deep calibration and printer connectivity. Ranked #6 of 27 in 3D Slicer Software by our editors (8.8/10); pricing: Free plan; best for advanced FDM users needing calibration depth.
At a glance
- Editor score8.8 / 10
- PricingFree plan
- Best forAdvanced FDM users needing calibration depth
- Free planYes
- Paid fromFree
- Support generationBoth
- Facts checked21 Sep 2026
Where it wins
- Free, open-source software for Windows, macOS, and Linux
- Deep calibration tools for temperature, flow, retraction, and input shaping
- Supports multimaterial preparation, variable layers, and printer connectivity
Where it doesn't
- Does not provide resin slicing
- Its feature set is focused on FFF/FDM workflows
- No paid plans or premium support tiers are offered
Our verdict on OrcaSlicer
OrcaSlicer is a free, open-source desktop slicer for FFF/FDM 3D printers. It prepares models for printing, generates G-code, and supports makers, hobbyists, professionals, and community-driven workflows. The software runs on Windows, macOS, and Linux, with input support for STL, 3MF, STEP, DRC, OBJ, AMF, SVG, and ZIP files. Its core workflow covers model preparation, printer and material settings, process controls, support generation, and export.
Calibration is the standout area. OrcaSlicer includes tools for temperature, flow, pressure advance, retraction, and input shaping, alongside variable layer height in adaptive, smooth, and manual modes. Support generation can be automatic or manual, with tree and normal structures. Model preparation includes arrangement, orientation, cutting, mesh Boolean operations, and painting. Multimaterial and multicolor print preparation add scope for more involved FDM projects, while G-code and packaged 3MF export support common output workflows.
Connectivity broadens its fit for users managing more than a local slicing workflow. OrcaSlicer connects with Klipper, PrusaLink, and OctoPrint, and supports both G-code and packaged 3MF output. Its broad format support and free, open-source distribution make it a strong choice for advanced FDM users who want extensive control without a software purchase. It is less suitable for resin printing, since resin slicing is not part of its supported workflow, and users seeking a paid plan structure or premium tier should look elsewhere.
Your product? Our editors can test OrcaSlicer in depth and publish a review, labelled as paid · from $149/mo →
OrcaSlicer pricing
OrcaSlicer fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Support generation | Both |
| Resin slicing | No |
| Multi-material printing | Yes |
| Variable layer height | Yes |
| Supported platforms | Windows, macOS, Linux |
| Input file formats | STL, 3MF, STEP, DRC, OBJ, AMF, SVG, ZIP |
| Output file formats | G-code, Gcode.3MF, OBJ, STL, DRC, generic 3MF |
| Deployment | Desktop |
| Platforms | Windows, macOS, Linux |
| Support | Community, Docs |
| Built for | Solo, Small business (editorial estimate) |
| Integrations | 3 integrations: Klipper, PrusaLink, OctoPrint |
| Pricing | Free plan |
| Website | orcaslicer.com |
| Facts checked | 21 Sep 2026 |
OrcaSlicer integrations
OrcaSlicer lists 3 integrations on its own site.
- Klipper
- PrusaLink
- OctoPrint
Alternatives to OrcaSlicer
- Formlabs PreFormA capable free slicer for teams committed to Formlabs production workflows.9.3
- UltiMaker CuraA capable free slicer for FDM users who want detailed control over print preparation.9.2
- Creality PrintA capable free slicer for Creality-focused FDM workflows, with cloud and remote-control features.9.2
See all OrcaSlicer alternatives →
OrcaSlicer vs the competition
- OrcaSlicer vs UltiMaker Cura
- OrcaSlicer vs Creality Print
- OrcaSlicer vs IceSL
- OrcaSlicer vs GrabCAD Print
- OrcaSlicer vs Anycubic Photon Workshop
Compare OrcaSlicer with any tool side by side →
Also Ranked In
OrcaSlicer is ranked in 3 of our directories.
Used OrcaSlicer? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used OrcaSlicer for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
OrcaSlicer is listed in our 3D Slicer Software directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/orcaslicer/"><img src="https://www.itechguides.com/best/badge/orcaslicer.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update