Free Slic3r alternatives: 4 apps ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rank

4 of the 5 Slic3r alternatives we track can be used for free (free, open source, or with a free plan). PrusaSlicer, Bambu Studio and OrcaSlicer rank highest, with facts last verified Nov 8, 2026.

Quick comparison

#	App	Pricing	Verified price	Open source	Platforms	Verified facts	Score
1	PrusaSlicer	Open source	—	Yes	Windows, macOS, Linux	5 of 5	78.2
2	Bambu Studio	Open source	—	Yes	Windows, macOS, Linux	3 of 3	72.2
3	OrcaSlicer	Open source	—	Yes	Windows, macOS, Linux	4 of 4	64.8
4	UltiMaker Cura	Open source	—	Yes	Windows, macOS, Linux	4 of 4	61.8

1. PrusaSlicerTop pick
Best for: Prusa owners and anyone who wants a mature, free slicer that works fully offline
Open sourceWindows, macOS, Linux
78.2
score / 100
Why switch from Slic3r
Started as a Slic3r fork and is far more actively developed, with many printer profiles and tree supports.
Pros
Simple, Advanced and Expert modes in one app
Fully local slicing with no account
Strong organic supports and multi-material tools
Free and open source
Cons
Interface is plainer than newer slicers
Fewer built-in calibration tests than OrcaSlicer
Remote printing features favour Prusa printers
Visit PrusaSlicer Details and reviews
How this score is calculated
Editorial fit ×0.3100
Reviews ×0.363
Clicks (90 days) ×0.1563
Freshness ×0.15100
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is PrusaSlicer a good Slic3r alternative?
Verified facts
5 of 5 verified
License
AGPL-3.0
Checked Nov 8, 2026github.com(opens source in a new tab)
Price
Free, no account
Checked Nov 8, 2026prusa3d.com(opens source in a new tab)
Platforms
Windows, Mac, Linux
Checked Nov 8, 2026prusa3d.com(opens source in a new tab)
Local slicing
Yes
Checked Nov 8, 2026prusa3d.com(opens source in a new tab)
Based on
Slic3r
Checked Nov 8, 2026prusa3d.com(opens source in a new tab)
2. Bambu Studio
Best for: Bambu Lab printer owners who want the tuned, officially supported slicer
Open sourceWindows, macOS, Linux
72.2
score / 100
Why switch from Slic3r
Open-source slicer from the same lineage, best if you own or plan to buy a Bambu Lab printer.
Pros
Tuned profiles and tight integration with Bambu printers and the AMS
Easy multicolour painting with automatic filament mapping
Remote printing and monitoring over LAN or cloud
Free and open source
Cons
Best suited to Bambu hardware; third-party printer support is thinner
Cloud features need a Bambu Lab account
Linux builds only via GitHub, not the main download page
Visit Bambu Studio Details and reviews
How this score is calculated
Editorial fit ×0.369
Reviews ×0.363
Clicks (90 days) ×0.15100
Freshness ×0.1585
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is Bambu Studio a good Slic3r alternative?
Verified facts
3 of 3 verified
License
AGPL-3.0
Checked Nov 8, 2026github.com(opens source in a new tab)
Platforms
Windows, macOS, Linux
Checked Nov 8, 2026github.com(opens source in a new tab)
Based on
PrusaSlicer
Checked Nov 8, 2026github.com(opens source in a new tab)
3. OrcaSlicer
Best for: Hobbyists with mixed or non-Bambu printers who want calibration tools and deep control
Open sourceWindows, macOS, Linux
64.8
score / 100
Why switch from Slic3r
Free, open-source fork in the same family with calibration tools and presets for many brands.
Pros
Built-in calibration tests for flow, pressure advance and more
Profiles for hundreds of printers across brands
Works with Klipper, PrusaLink and OctoPrint
No account or telemetry
Cons
Settings depth can overwhelm beginners
Support for new Bambu features can lag the official slicer
Community-run, so no vendor support
Visit OrcaSlicer Details and reviews
How this score is calculated
Editorial fit ×0.387
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.15100
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is OrcaSlicer a good Slic3r alternative?
Verified facts
4 of 4 verified
License
AGPL-3.0
Checked Nov 8, 2026orcaslicer.com(opens source in a new tab)
Platforms
Windows, macOS, Linux
Checked Nov 8, 2026orcaslicer.com(opens source in a new tab)
Account or telemetry
None
Checked Nov 8, 2026orcaslicer.com(opens source in a new tab)
Network printing
Klipper, PrusaLink, OctoPrint
Checked Nov 8, 2026orcaslicer.com(opens source in a new tab)
4. UltiMaker Cura
Best for: Beginners and UltiMaker users who want a well-known slicer with plugins and material profiles
Open sourceWindows, macOS, Linux
61.8
score / 100
Why switch from Slic3r
Free slicer with a huge printer library and a plugin marketplace, from a different codebase.
Pros
Recommended mode gets beginners printing quickly
400+ settings for fine-tuning
Marketplace for plugins and material profiles
Free and open source
Cons
Profiles for fast modern printers lag behind OrcaSlicer
Can feel slow with large or complex models
Fewer built-in calibration tools than competitors
Visit UltiMaker Cura Details and reviews
How this score is calculated
Editorial fit ×0.377
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.15100
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is UltiMaker Cura a good Slic3r alternative?
Verified facts
4 of 4 verified
License
LGPL-3.0
Checked Nov 8, 2026github.com(opens source in a new tab)
Open source
Yes, free
Checked Nov 8, 2026ultimaker.com(opens source in a new tab)
Settings
400+
Checked Nov 8, 2026ultimaker.com(opens source in a new tab)
Platforms
Windows, macOS, Linux
Checked Oct 29, 2026ultimaker.com(opens source in a new tab)

Quick comparison

1. PrusaSlicerTop pick

Pros

Cons

Verified facts

2. Bambu Studio

Pros

Cons

Verified facts

3. OrcaSlicer

Pros

Cons

Verified facts

4. UltiMaker Cura

Pros

Cons

Verified facts