What is the difference between the installer and portable version?

The Windows Installer (.exe) installs Orca Slicer to your system with Start Menu shortcuts and file associations. The Portable version (.zip) can be extracted and run from any folder, including USB drives, without installation - useful for users who want to keep settings self-contained or use on multiple computers.

Download Orca Slicer

v2.4.0 Released October 2025

Free and open-source 3D printing slicer software. Download the latest stable version for Windows, macOS, or Linux. No registration required, no hidden costs.

Windows

Windows Installer

Standard installation with Start Menu shortcuts, file associations, and automatic updates. Best for most users.

OrcaSlicer_Windows_Installer_V2.4.0.exe ~150 MB

Download Installer

Windows Portable

No installation required. Extract and run from any folder or USB drive. Settings stored locally in the app folder.

OrcaSlicer_Windows_V2.4.0_portable.zip ~150 MB

Download Portable

System Requirements: Windows 10 or Windows 11, 64-bit processor required. Not compatible with Windows 7/8 or 32-bit systems.

macOS

macOS Universal (Intel & Apple Silicon)

Universal binary that works on all Macs - both Intel and Apple Silicon (M1/M2/M3/M4). Automatically runs native code for your chip.

OrcaSlicer_Mac_universal_V2.4.0.dmg ~120 MB

Download for macOS

System Requirements: macOS 11.0 Big Sur or later. On first launch, right-click the app and select "Open" to bypass Gatekeeper security prompt.

Linux

AppImage (x86_64)

For standard 64-bit PCs/laptops. Works on most Linux distributions without installation.

OrcaSlicer_Linux_AppImage_Ubuntu2404_V2.4.0.AppImage ~130 MB

Download AppImage

AppImage (aarch64/ARM64)

For ARM-based devices like Raspberry Pi 4/5 or ARM laptops.

OrcaSlicer_Linux_AppImage_Ubuntu2404_aarch64_V2.4.0.AppImage ~130 MB

Download ARM AppImage

Flatpak (x86_64)

Sandboxed installation for standard 64-bit PCs. Automatic updates through software center.

OrcaSlicer-Linux-flatpak_V2.4.0_x86_64.flatpak ~130 MB

Download Flatpak

Flatpak (aarch64/ARM64)

Sandboxed installation for ARM devices like Raspberry Pi or ARM laptops.

OrcaSlicer-Linux-flatpak_V2.4.0_aarch64.flatpak ~130 MB

Download ARM Flatpak

System Requirements: Ubuntu 24.04 or equivalent distribution. For AppImage, run: chmod +x OrcaSlicer*.AppImage to make it executable.

Nightly Builds (Development Versions)

Warning: Nightly builds contain the latest development features but may be unstable. They are automatically built from the main development branch and may have bugs or incomplete features. Use for testing only - not recommended for production printing.

Nightly builds are useful for testing new features before they're officially released, reporting bugs to developers, or accessing fixes that haven't yet been included in a stable release. These links always point to the latest nightly build.

Windows Nightly

Windows Installer (Nightly)

Standard installation with Start Menu shortcuts and file associations.

Download Installer

Windows Portable (Nightly)

No installation required. Extract and run from any folder.

Download Portable

macOS Nightly

macOS Universal (Nightly)

Works on both Intel and Apple Silicon Macs.

Download for macOS

Linux Nightly

AppImage x86_64 (Nightly)

For standard 64-bit PCs and laptops.

Download AppImage

AppImage aarch64 (Nightly)

For ARM devices like Raspberry Pi.

Download ARM AppImage

Flatpak x86_64 (Nightly)

Sandboxed installation for 64-bit PCs.

Download Flatpak

Flatpak aarch64 (Nightly)

Sandboxed installation for ARM devices.

Download ARM Flatpak

Profile Validator Tool

The Profile Validator is a utility tool for printer profile developers and advanced users. It helps validate and test printer profiles before distribution.

Windows

Profile Validator for Windows systems.

Download

macOS

Profile Validator for macOS (Universal).

Download

Linux

Profile Validator for Linux systems.

Download

System Requirements

Processor

64-bit CPU required (Intel x64, AMD64, or Apple Silicon). Multi-core processor recommended for faster slicing.

Memory (RAM)

4 GB minimum, 8 GB or more recommended. Large models and multi-plate projects require more memory.

Graphics

OpenGL 2.0 compatible graphics card. Dedicated GPU recommended for smooth 3D viewport performance.

Storage

500 MB available disk space for installation. Additional space needed for projects and G-code files.

Display

1280x720 minimum resolution. 1920x1080 or higher recommended for comfortable workflow.

Network (Optional)

Internet connection for updates, model downloads, and network printing. Core features work offline.

Installation Instructions

Installing Orca Slicer on Windows

Download the Windows Installer (.exe) from the download section above.
Run the installer by double-clicking the downloaded file. If Windows SmartScreen appears, click "More info" then "Run anyway" - the software is safe but may not be recognized because it's open source.
Follow the setup wizard to complete installation. Choose your installation directory (default is recommended).
Launch Orca Slicer from the Start Menu or desktop shortcut. On first launch, you'll be prompted to select your 3D printer.

Tip: For the portable version, simply extract the ZIP file to any folder and run OrcaSlicer.exe directly. Settings will be stored in the same folder.

Installing Orca Slicer on macOS

Download the Universal DMG file - it works on both Intel and Apple Silicon Macs.
Open the DMG file by double-clicking it. A window will appear showing the Orca Slicer application.
Drag Orca Slicer to your Applications folder as indicated in the window.
First launch: Right-click (or Control-click) on Orca Slicer in Applications and select "Open". Click "Open" again in the security dialog. This is only needed the first time.
Select your printer on first launch and you're ready to start slicing!

Tip: If you see "Orca Slicer can't be opened because it is from an unidentified developer", go to System Preferences > Security & Privacy and click "Open Anyway".

Installing Orca Slicer on Linux

Option 1: AppImage (Recommended)

Download the AppImage file from the download section above.
Make it executable by running in terminal: chmod +x OrcaSlicer_Linux_V2.4.0.AppImage
Run the AppImage by double-clicking it or from terminal: ./OrcaSlicer_Linux_V2.4.0.AppImage

Option 2: Flatpak

Install Flatpak if not already installed on your system.
Add Flathub repository: flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
Install Orca Slicer: flatpak install flathub com.github.softfever.OrcaSlicer
Run: flatpak run com.github.softfever.OrcaSlicer

Tip: For AppImage integration with your desktop environment, consider using AppImageLauncher.

Recent Releases

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Download & Installation FAQ

Does Orca Slicer work on my Mac? ▼

Orca Slicer now provides a Universal binary that works on all Macs - both Intel-based and Apple Silicon (M1/M2/M3/M4). Simply download the macOS Universal version and it will automatically run native code for your chip. You need macOS 11.0 Big Sur or later.

What's the difference between installer and portable versions? ▼

The Windows Installer installs Orca Slicer to your Program Files, creates Start Menu shortcuts, associates file types (.3mf, .stl), and stores settings in your user profile. The Portable version runs from any folder without installation - extract the ZIP and run OrcaSlicer.exe directly. Settings are stored in the same folder as the executable, making it ideal for USB drives or users who want self-contained installations.

Windows says the file is not commonly downloaded - is it safe? ▼

Yes, Orca Slicer is safe. Windows SmartScreen shows this warning for any software that isn't frequently downloaded or doesn't have an expensive code signing certificate. Since Orca Slicer is free open-source software, the developers don't purchase expensive certificates. You can verify the software is authentic by checking the download comes from the official GitHub repository. Click "More info" then "Run anyway" to proceed with installation.

Are nightly builds safe to use? ▼

Nightly builds are built from the latest development code and are as safe as stable releases in terms of security. However, they may contain bugs, incomplete features, or experimental changes that could affect print quality or cause crashes. They're recommended for advanced users who want to test new features, help developers find bugs, or need a specific fix that hasn't been released yet. For production printing, stick with stable releases.

Can I have multiple versions of Orca Slicer installed? ▼

Yes! Use the portable version for this purpose. You can have multiple portable versions in different folders (e.g., OrcaSlicer-2.4.0, OrcaSlicer-Nightly) and run whichever you need. Each portable installation maintains its own settings. The installed version uses shared settings in your user profile, while portable versions are completely self-contained.

Where are my settings and profiles stored? ▼

Windows (Installed): %APPDATA%\OrcaSlicer
Windows (Portable): In the data folder next to OrcaSlicer.exe
macOS: ~/Library/Application Support/OrcaSlicer
Linux: ~/.config/OrcaSlicer
Back up this folder to preserve your custom profiles and settings.