OrcaSlicer vs Slic3r

OrcaSlicer9.0Visit SSlic3r9.0Visit

OrcaSlicer #2 in 3D Printing Software 9.0/10 Free plan Free plan✓ 5 of 6 features Visit OrcaSlicer

vs

S Slic3r #3 in 3D Printing Software 9.0/10 Free plan Free plan✓ 4 of 6 features Visit Slic3r

• OrcaSlicer fits best

  Advanced FDM users who want free calibration control

• Slic3r fits best

  Established free FDM slicing

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Side by side

Feature	OrcaSlicer 9.0/10 Visit ↗	SSlic3r 9.0/10 Visit ↗
At a glance
Editor score	9.0	9.0
Ranking	#2 in 3D Printing Software	#3 in 3D Printing Software
Best for	Advanced FDM users who want free calibration control	Established free FDM slicing
Pricing model	Free	Free
Starting price	Free plan	Free plan
Free plan	✓	✓
Free trial	—	—
Deployment	Desktop	Desktop
Platforms	Windows, macOS, Linux	Windows, macOS, Linux
Integrations	10 integrations	1 integrations
Features OrcaSlicer 5/6 · Slic3r 4/6
Auto supports	✓	✓
Printer control	✓	✓
Print monitoring	✓ (best)	Not checked yet
Cloud slicing	—	Not checked yet
Multi-material tools	✓	✓
Model repair	✓	✓
Our review
Pros	Extensive built-in calibration tests for key print settings Configurable supports, mesh repair, and multi-material preparation Network printing and monitoring through compatible hosts	Free, open-source slicing for Windows, macOS, and Linux Support generation, mesh repair, and multi-material preparation Printer control, OctoPrint integration, and batch processing
Cons	Focused on FDM rather than other 3D printing processes Cloud slicing is not part of its workflow Mesh repair depends on the platform	Primarily aimed at advanced users SLA/DLP workflows are experimental The official site lists version 1.3.0 from 2018
Our verdict	OrcaSlicer is a free, open-source desktop slicer for FDM 3D printing from SoftFever. It converts 3D models into printer instructions and supports Windows, macOS, and Linux. Its audience includes makers and professionals who want detailed… Read the review →	Slic3r is open-source 3D printing software for preparing digital models for FFF/FDM printing. It slices models into layers, generates G-code and toolpaths, and provides visual previews for inspecting print paths. The desktop application… Read the review →

Strengths and trade-offs

• OrcaSlicer — where it wins

  • Extensive built-in calibration tests for key print settings
  • Configurable supports, mesh repair, and multi-material preparation
  • Network printing and monitoring through compatible hosts

  Where it doesn't

  • Focused on FDM rather than other 3D printing processes
  • Cloud slicing is not part of its workflow
  • Mesh repair depends on the platform

• Slic3r — where it wins

  • Free, open-source slicing for Windows, macOS, and Linux
  • Support generation, mesh repair, and multi-material preparation
  • Printer control, OctoPrint integration, and batch processing

  Where it doesn't

  • Primarily aimed at advanced users
  • SLA/DLP workflows are experimental
  • The official site lists version 1.3.0 from 2018

• OrcaSlicer9.0/10 · Free plan

  A calibration-focused FDM slicer with broad printer-host integrations.

  Visit OrcaSlicerFull verdict →
• SSlic3r9.0/10 · Free plan

  A mature free slicer with multi-material tools, printer control, and OctoPrint integration.

  Visit Slic3rFull verdict →