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OrcaSlicer
What it is
OrcaSlicer is a free, open-source slicer for FDM 3D printers on 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 suite covers flow rate, pressure advance, temperature towers, retraction, tolerance, and maximum volumetric speed. Tuned presets are available for hundreds of printers, including Bambu Lab, Prusa, Creality, and Voron. The app can send jobs to and monitor printers running Klipper, PrusaLink, or OctoPrint. It also supports automatic supports, model repair, multi-material printing, and variable layer height. Resin slicing and cloud slicing are not supported. OrcaSlicer works offline without an account or telemetry, and models, project files, G-code, and printer settings remain on the user's device. Optional connections can be enabled for updates, profiles, or integrations. The project is licensed under AGPL-3.0 and developed openly by SoftFever and community contributors.
For and against
For
- Free and open source
- Calibration covers flow, pressure, temperature, and retraction
- Can send jobs to and monitor supported printers
- Works offline without an account or telemetry
Against
- Does not support resin slicing
- Does not support cloud slicing
The verdict
OrcaSlicer provides detailed FDM preparation and calibration controls, with optional printer connections and offline use. Users needing resin or cloud slicing will need a different workflow.
Who it suits
OrcaSlicer suits people preparing FDM prints who want calibration tools, printer controls, and support for multiple materials. It is not aimed at resin slicing or cloud-based slicing workflows.
Plans and prices
OrcaSlicer
Free, open-source FDM 3D printer slicer · Windows, macOS, Linux
Read 29 Sep 2026 · orcaslicer.com
On the record
- Calibration
- Its built-in calibration suite covers flow rate, pressure advance, temperature towers, retraction, tolerance, and maximum volumetric speed.orcaslicer.com · read 29 Sep 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 · read 29 Sep 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 · read 29 Sep 2026
- License
- OrcaSlicer is licensed under AGPL-3.0 and is developed in the open by SoftFever and community contributors.orcaslicer.com · read 29 Sep 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 · read 29 Sep 2026
- Optional connections
- The app connects for update checks, profile updates, and printer or cloud integrations that users choose to enable.orcaslicer.com · read 29 Sep 2026
- Print controls
- Users can set speed, layer height, pressure, and temperature independently for walls, infill, supports, and other features.orcaslicer.com · read 29 Sep 2026
- Printer profiles
- The site describes tuned presets for hundreds of printers, including Bambu Lab, Prusa, Creality, and Voron.orcaslicer.com · read 29 Sep 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 · read 29 Sep 2026
- Product
- OrcaSlicer is a free, open-source slicer for FDM 3D printers.orcaslicer.com · read 29 Sep 2026
- Security
- The privacy policy says update and profile downloads use HTTPS and print-host credentials are stored locally.orcaslicer.com · read 29 Sep 2026
- Support
- The project directs bug reports and feature requests to GitHub and offers community help through Discord.orcaslicer.com · read 29 Sep 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 · read 29 Sep 2026
- Third-party plugin
- The Bambu Network Plugin is an optional third-party download and is not installed silently.orcaslicer.com · read 29 Sep 2026
- Workflow
- The slicer can send jobs to and monitor printers running Klipper, PrusaLink, or OctoPrint.orcaslicer.com · read 29 Sep 2026
