Short answer: The only official OrcaSlicer website is www.orcaslicer.com, and the downloads it links to are on the project’s GitHub releases, Microsoft Store and Flathub. The project’s own README names orca-slicer.com and orcaslicer.net as impostor sites. v2.4.2 (7 July 2026) was still the latest stable release when we checked on 14 October 2026; compare the installer’s SHA-256 with the GitHub release before running it.
Editorial review: 2 October 2026 UTC. We downloaded the official Windows x64 installer and checked its size, hash and Windows Authenticode status. We did not run the installer, install OrcaSlicer, slice a model, connect a printer or scan the file for malware. Other platform rows below are publisher metadata, not downloads we tested.
Official sources and lookalike domains
The current project README identifies www.orcaslicer.com as its official website. Its download page links to GitHub, Microsoft Store and Flathub. The README also lists winget install --id=SoftFever.OrcaSlicer -e and brew install --cask orcaslicer. Package-manager availability does not mean every channel receives an update at the same time; check the version offered before installing.
The README specifically warns about orca-slicer[.]com and orcaslicer[.]net pretending to be official. This is the project’s warning, not a malware analysis we performed on those sites. Use the official links above rather than a sponsored search result or a domain that merely contains the product name. See our guide to identifying fake download pages.
Not sure about a link you found? Paste it into our download site checker; it flags these domains and other OrcaSlicer look-alikes.
Choose the package before downloading
| Your computer | Official package choice | Check first |
|---|---|---|
| Windows with Intel or AMD 64-bit CPU | x64 installer or x64 portable ZIP; Microsoft Store is the project’s recommended route | Look at Settings → System → About → System type. This is the computer running the slicer, not the printer’s processor. |
| Windows on ARM | ARM64 installer or ARM64 portable ZIP | Match the host CPU; do not choose the x64 file simply because an older tutorial uses it. |
| Mac | Universal DMG | The README covers Intel and Apple Silicon. Check the supported macOS version on the download page. |
| Linux | Flathub, or the matching x86_64/aarch64 AppImage or Flatpak asset | Match architecture and packaging dependencies. The current AppImage names include Ubuntu2404; a general Linux minimum does not prove that specific binary works on an older distribution. |
The official download page lists Windows 10 or later, macOS 10.15 or later, and Ubuntu 20.04 or an equivalent Linux distribution. It gives 4 GB RAM minimum, 8 GB or more recommended and 500 MB free storage; Windows and Linux also list OpenGL 3.3 graphics. These are publisher requirements, not our tested compatibility matrix. Allow additional space for the downloaded archive, extraction, projects and profiles. Portable means a ZIP distribution; it does not promise zero dependencies or a fully isolated configuration.
v2.4.2 release files, sizes and SHA-256
The following records come from the official latest-stable API, checked on 2 October 2026. MB here means decimal megabytes (1,000,000 bytes). Compare the full filename and version as well as the digest: the x64 installer and portable ZIP are different assets.
| File | Size (MB) | SHA-256 |
|---|---|---|
OrcaSlicer_Linux_AppImage_Ubuntu2404_aarch64_V2.4.2.AppImage |
135.47 MB | e1a07275a25f176626c55a5df39e91bc4476d8c28ee4a3192ff758e29dd5c3ba |
OrcaSlicer_Linux_AppImage_Ubuntu2404_V2.4.2.AppImage |
137.76 MB | d12fb8c8eac1aecd2dfb6377acd48f994f8fa439ed5292fa532dd82880f029fd |
OrcaSlicer_Mac_universal_V2.4.2.dmg |
246.09 MB | e15e7bb1b66214ec6e96b169b388004179c4f5f705effcdaf8c80d4992ee0366 |
OrcaSlicer_Windows_Installer_V2.4.2_arm64.exe |
124.94 MB | ce00548d9444eeada4e61f49f35e2984e493671aadd3d98a9ee94fe18977527d |
OrcaSlicer_Windows_Installer_V2.4.2_x64.exe |
137.86 MB | f602f9d646f49bee387d8f342a0193a7ef20756eabb845e19795c5a62b90a58a |
OrcaSlicer_Windows_V2.4.2_x64_portable.zip |
171.37 MB | feba3009dfb9d268779cca5758a1a5bc3b7d0722bf8fa48d5c57340de975d6be |
Actually downloaded: OrcaSlicer_Windows_Installer_V2.4.2_x64.exe was 137,860,341 bytes (137.86 MB). Its calculated SHA-256 matched f602f9d646f49bee387d8f342a0193a7ef20756eabb845e19795c5a62b90a58a. Windows returned NotSigned, signature type None, with no signer certificate. This result applies to that measured file on our Windows host. It does not establish signature status for the Store package or other release files.
Verify the exact file on Windows
- Open the official release page and select the asset for your computer. Keep the file’s full name visible; a browser may add a suffix if the same name already exists.
- In PowerShell, switch to the folder containing the file. Compute its digest explicitly with SHA-256:
Get-FileHash -Algorithm SHA256 -LiteralPath '.\OrcaSlicer_Windows_Installer_V2.4.2_x64.exe'Compare all 64 hexadecimal characters with that exact asset’s digest on the release. A mismatch identifies different bytes; stop and check the destination, filename and version before using the file. If a future release changes the filename, update the command and use that release’s digest rather than this v2.4.2 table.
You can inspect the signature independently:
Get-AuthenticodeSignature -LiteralPath '.\OrcaSlicer_Windows_Installer_V2.4.2_x64.exe' | Select-Object Status, SignatureType, SignerCertificateA matching hash establishes that your file matches the recorded release asset. It is not a malware verdict, a code audit or proof of compatibility. NotSigned does not itself mean a file is malicious. Do not turn off Windows security protections to resolve a warning. The README points users who prefer a Store-signed package to Microsoft Store. Our Windows signature and hash guide explains these separate checks.
On macOS use shasum -a 256 with the full DMG filename; on Linux use sha256sum with the full asset filename. Compare with the corresponding DMG or AppImage digest, not the Windows digest.
Before replacing an existing installation
- Save a separate copy of your working project and export custom printer, filament and process presets using the application’s export options. Keep the old version recorded with those files.
- Read the v2.4.2 notes if upgrading: this release includes preset migration, optional cloud-sync and networking fixes. A release-note fix is the developer’s description, not evidence that we reproduced it.
- After opening a project, check the selected printer, nozzle, plate and filament before generating new G-code. A saved 3MF can carry settings as well as geometry.
- If you need Bambu network printing, review the printer model, firmware and authorization path separately. Having a printer profile does not guarantee every remote-control feature. See OrcaSlicer versus Bambu Studio.
If the Windows build will not start, the README lists WebView2 and Visual C++ runtime links for troubleshooting. Its displayed links are x64: use Microsoft’s appropriate guidance for your host rather than assuming the same redistributable applies to every architecture. We did not install or test those runtimes.
Stable, nightly, accounts and cost
Use stable for an ordinary workflow. The project’s nightly builds are intended for development testing; _belt filenames identify experimental belt-printer variants. A nightly asset is not a newer stable release. OrcaSlicer’s core is free and licensed under AGPL-3.0. The Bambu network plugin is optional and uses non-free libraries. OrcaCloud profile services are separate from local slicing; local slicing is not evidence that a cloud service needs no account. We have not audited network traffic or telemetry.
For an unverified file, comparing a trusted release digest is a useful first step. If you already ran a suspicious file, a later matching download cannot establish what the earlier program did. Preserve the details of the original file and seek appropriate security checks rather than treating a reinstall as proof the computer is clean.
Continue with the OrcaSlicer catalogue entry or the printer-brand slicer guide.
Sources and review limits
Official download and requirements; README, source warning and licence; v2.4.2 release notes; asset metadata; Microsoft Get-FileHash reference. Publisher facts and our one-file static inspection are identified separately. No installation, printing, benchmark, antivirus verdict or compatibility certification is claimed.
