PrusaSlicer (formerly known as Slic3r Prusa Edition or Slic3r PE) is free and open-source slicer software developed by Prusa Research. It is used to prepare models for 3D printing on both FFF and MSLA (SLA) 3D printers, and can be also used to manage Prusa printers remotely via integrated Prusa Connect and browse the Printables model database.
PrusaSlicer is available for Windows, macOS, and Linux. It is licensed under the GNU Affero General Public License v3.0 (AGPLv3) and is based on the older open-source project, Slic3r.
The Slic3r project originated in 2011 within the RepRap community as an open-source slicer led by Alessandro Ranellucci.
Until 2016, Prusa Research relied solely on Slic3r. As the company grew, it required faster development and implementation of new features. According to the company, the cooperation with the original Slic3r development team became unsustainable, which led to the decision in 2016 to create a dedicated fork of the project named Slic3r Prusa Edition.
What is PrusaSlicer?
PrusaSlicer is an open-source 3d & cad program for Windows from Prusa Research. It ranks 3rd by popularity among 3d & cad in this catalogue. It is written in C++. Besides Windows, it is available for Linux.
Installation and requirements
Official installers exist for 64-bit as EXE (Inno Setup). Installation asks for administrator rights. The installer supports unattended (silent) installation.
Updates and version history
The current version is 2.9.6, released on June 25, 2026. 23 versions are listed since April 27, 2021, each with links to its own installer files. That is about 4.5 releases a year.
Popularity and file types
The Chocolatey package has been downloaded 82,280 times. The source code on GitHub (prusa3d/PrusaSlicer) has 9,421 stars. Wikipedia has an article about it in 4 of our languages. On Windows it registers 2 file types, including .stl and .3mf. Similar programs include Bambu Studio, MeshLab and Ultimaker Cura.
Project description on GitHub: “G-code generator for 3D printers (RepRap, Makerbot, Ultimaker etc.)”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Also runs on Linux
- Large user base
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: PrusaSlicer is an open-source 3d & cad tool for 64-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is PrusaSlicer safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
6820D15F922908C3692CEA2BDEF7B5A2556FAB1B7B55F4C312A89272B5EB8052· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 23 versions ›23 versions over 5 years · about 4.5 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 2.9.6Latest | June 25, 2026 | — | 64-bit EXE (Inno Setup) |
| 2.9.5 | May 19, 2026 | — | 64-bit EXE (Inno Setup) |
| 2.9.4 | November 7, 2025 | — | 64-bit EXE (Inno Setup) |
| 2.9.3 | September 15, 2025 | — | 64-bit EXE (Inno Setup) |
| 2.9.2 | April 10, 2025 | — | 64-bit EXE (Inno Setup) |
| 2.9.1 | March 11, 2025 | — | 64-bit EXE (Inno Setup) |
| 2.9.0 | December 20, 2024 | — | 64-bit EXE (Inno Setup) |
| 2.8.1 | September 20, 2024 | — | 64-bit EXE (Inno Setup) |
Install from the command line
Silent install ›winget install --id Prusa3D.PrusaSlicer -echoco install prusaslicer -yscoop install extras/prusaslicerPrusaSlicer-2.9.6-setup.exe /VERYSILENTRelated guide: How to use winget: install and update apps
Also for other systems
brew install --cask prusaslicerflatpak install flathub com.prusa3d.PrusaSlicerInformation
- Publisher
- Prusa Research
- Category
- 3D & CAD
- Licence
- AGPL-3.0
- Price
- Free
- Source code
- github.com/prusa3d/PrusaSlicer
- Written in
- C++
- Content rating
- All ages
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (Inno Setup)
- Other platforms
- Linux
- Version
- 2.9.6
- Released
- June 25, 2026
- Added to the catalogue
- April 27, 2021
- Versions listed
- 23
- Updates / year
- 4.5
- Chocolatey downloads
- 82,280
- GitHub stars
- 9,421
- GitHub forks
- 2,383
- Website
- prusa3d.com
- winget ID
- Prusa3D.PrusaSlicer
- Chocolatey package
- prusaslicer
- Scoop package
- extras/prusaslicer
File types it opens (2)
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to PrusaSlicer
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Frequently asked questions
Is PrusaSlicer free?
Yes. PrusaSlicer is open-source software under the AGPL-3.0 licence.
Is PrusaSlicer safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install PrusaSlicer with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can PrusaSlicer be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does PrusaSlicer run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of PrusaSlicer?
The versions page lists all 23 versions with links to their official installer files, back to April 27, 2021.
What are alternatives to PrusaSlicer?
Bambu Studio, MeshLab, Ultimaker Cura, OpenToonz and UVtools. The alternatives page compares them.
