OrcaSlicer

Free plan LinuxMacWindows

What OrcaSlicer is

OrcaSlicer is a free, open-source slicer for FDM 3D printers, available for Windows, macOS and Linux. It prepares models for printing with separate speed, layer-height, pressure and temperature controls for walls, infill, supports and other features. Its calibration tools cover flow rate, pressure advance, temperature towers, retraction, tolerance and maximum volumetric speed. The project offers tuned presets for hundreds of printers, including Bambu Lab, Prusa, Creality and Voron. Users can send jobs to and monitor printers running Klipper, PrusaLink or OctoPrint. Other supported tools include automatic supports, model repair, multi-material printing and variable layer height; resin slicing and cloud slicing are not supported. The desktop app works offline without an account or telemetry, and keeps models, project files, G-code and printer settings on the user’s device. Optional connections can enable updates, profiles and printer or cloud services. OrcaSlicer is licensed under AGPL-3.0 and developed openly by SoftFever and community contributors.

Who it suits

OrcaSlicer suits FDM 3D printer owners who want calibration and print controls across supported desktop systems. It may also fit users who prefer offline use without an account or telemetry.

What it does well

Free and open-source under AGPL-3.0
Calibration tools cover flow, temperature and retraction
Can send jobs to and monitor supported print hosts
Supports model repair and variable layer height

What to know first

Does not support resin slicing
Cloud slicing is not supported
Nightly builds may be unstable

Limits

The free plan is the OrcaSlicer desktop slicer. It does not include cloud slicing or resin slicing; nightly builds may be unstable.

Plans

Plan	Billed and limits	Price
OrcaSlicer	Free, open-source FDM 3D printer slicer · Windows, macOS, Linux	Free

As orcaslicer.com lists them, read 29 Sept 2026. The maker's own page has the final word.

Getting started

Download a stable build for Windows, macOS, or Linux through GitHub Releases, the Microsoft Store, or Flathub.
Check that the computer meets the listed operating system, memory, and disk requirements.
Open the desktop app; an account is not required.
Choose a printer profile from the available presets or configure calibration and print controls.
Optionally enable printer, cloud, update, or profile connections.

Verdict

OrcaSlicer offers extensive FDM calibration and print controls at no cost. Its offline operation is optional integrations aside, while resin and cloud slicing are outside its supported scope.

Questions

Is OrcaSlicer free?

Yes. The listed plan costs nothing, and the software is open source under AGPL-3.0.

Which operating systems does it support?

Stable builds are offered for Windows, macOS, and Linux. The listed minimums are Windows 10 or later, macOS 10.15 or later, and Ubuntu 20.04 or equivalent for Linux.

Does OrcaSlicer require an account or an internet connection?

The desktop app works offline and requires no account. Optional connections can be enabled for updates, profile downloads, and printer or cloud integrations.

Which printers and print hosts can it connect to?

Tuned presets are described for hundreds of printers, including Bambu Lab, Prusa, Creality, and Voron. It can send jobs to and monitor Klipper, PrusaLink, or OctoPrint printers.

Does it support resin or cloud slicing?

No. Resin slicing and cloud slicing are not supported.

Who makes OrcaSlicer?

SoftFever and community contributors develop the project. OrcaSlicer Pte. Ltd. in Singapore is identified as the legal entity responsible for privacy requests.

Facts from OrcaSlicer's own pages

Calibration: Its built-in calibration suite covers flow rate, pressure advance, temperature towers, retraction, tolerance, and maximum volumetric speed. · orcaslicer.com, 29 Sept 2026
Downloads: Official stable builds are offered for Windows, macOS, and Linux through GitHub Releases, the Microsoft Store, and Flathub; nightly builds may be unstable. · orcaslicer.com, 29 Sept 2026
Integrations: The privacy policy lists optional print-host integrations including OctoPrint, Klipper/Moonraker, PrusaLink, and Duet, plus cloud services such as SimplyPrint, Obico, and Prusa Connect. · orcaslicer.com, 29 Sept 2026
License: OrcaSlicer is licensed under AGPL-3.0 and is developed in the open by SoftFever and community contributors. · orcaslicer.com, 29 Sept 2026
Maker and headquarters: The about page names SoftFever as creator and maintainer; the privacy policy identifies OrcaSlicer Pte. Ltd. in Singapore as the legal entity responsible for privacy requests. · orcaslicer.com, 29 Sept 2026
Optional connections: The app connects for update checks, profile updates, and printer or cloud integrations that users choose to enable. · orcaslicer.com, 29 Sept 2026
Print controls: Users can set speed, layer height, pressure, and temperature independently for walls, infill, supports, and other features. · orcaslicer.com, 29 Sept 2026
Printer profiles: The site describes tuned presets for hundreds of printers, including Bambu Lab, Prusa, Creality, and Voron. · orcaslicer.com, 29 Sept 2026
Privacy: The desktop app works offline, requires no account, and collects no telemetry; models, project files, G-code, and printer settings stay on the user's device. · orcaslicer.com, 29 Sept 2026
Product: OrcaSlicer is a free, open-source slicer for FDM 3D printers. · orcaslicer.com, 29 Sept 2026
Security: The privacy policy says update and profile downloads use HTTPS and print-host credentials are stored locally. · orcaslicer.com, 29 Sept 2026
Support: The project directs bug reports and feature requests to GitHub and offers community help through Discord. · orcaslicer.com, 29 Sept 2026
System requirements: The download page specifies Windows 10 or later, macOS 10.15 or later, and Ubuntu 20.04 or equivalent for Linux, with 4GB RAM minimum and 500MB free disk space. · orcaslicer.com, 29 Sept 2026
Third-party plugin: The Bambu Network Plugin is an optional third-party download and is not installed silently. · orcaslicer.com, 29 Sept 2026
Workflow: The slicer can send jobs to and monitor printers running Klipper, PrusaLink, or OctoPrint. · orcaslicer.com, 29 Sept 2026

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