PLaSK (Photonic Laser Simulation Kit) is a comprehensive tool for numerical analysis of broad range of physical phenomena
in photonic devices. It has been designed for simulating mainly semiconductor lasers, however the range of the covered
devices is much larger and includes e.g. transistors, light emitting diodes, photodetectors, etc.
Publisher’s description
What is PLaSK?
PLaSK is an open-source pc game program for Windows from Lodz University of Technology, Photonics Group.
Installation and requirements
Official installers exist for 64-bit as EXE (NSIS). The main installer is 41.0 MB. Installation asks for administrator rights. The installer supports unattended (silent) installation.
Updates and version history
The current version is 2026.10.21, released on October 21, 2026. 37 versions are listed since January 9, 2024, each with links to its own installer files. That is about 13 releases a year. The last update is less than a month old.
Popularity and file types
On Windows it registers 2 file types, including .py and .xpl. Similar programs include OpenTTD, RetroArch and Celestia.
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Frequent updates (about 13 a year)
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: PLaSK is an open-source pc game tool for 64-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is PLaSK safe to download?
- The file is served by get.plask.app, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
75E294333FA650032E5F559ACBF2F50F4E769BD8C41F52BC772806E3EB302E45· Open the VirusTotal report for this hash - The link answered when we last checked it (October 22, 2026)
- 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 37 versions ›37 versions over 3 years · about 13 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 2026.10.21Latest | October 21, 2026 | 41.0 MB | 64-bit EXE (NSIS) |
| 2026.10.15 | October 16, 2026 | — | 64-bit EXE (NSIS) |
| 2026.10.06 | October 7, 2026 | — | 64-bit EXE (NSIS) |
| 2026.08.24 | August 25, 2026 | — | 64-bit EXE (NSIS) |
| 2026.07.14 | July 16, 2026 | — | 64-bit EXE (NSIS) |
| 2026.06.19 | July 8, 2026 | — | 64-bit EXE (NSIS) |
| 2026.04.13 | April 14, 2026 | — | 64-bit EXE (NSIS) |
| 2025.12.02 | January 1, 2026 | — | 64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id PhotonicsTUL.PLaSK -ePLaSK-2026.10.21-win64-py314.exe /SProgram files (.exe): plask.exe
Related guide: How to use winget: install and update apps
Information
- Publisher
- Lodz University of Technology, Photonics Group
- Category
- PC games
- Licence
- GPL-3.0-or-later
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (NSIS)
- Version
- 2026.10.21
- Released
- October 21, 2026
- Added to the catalogue
- January 9, 2024
- Versions listed
- 37
- Updates / year
- 13.3
- Website
- plask.app
- winget ID
- PhotonicsTUL.PLaSK
File types it opens (2)
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is PLaSK free?
Yes. PLaSK is open-source software under the GPL-3.0-or-later licence.
Is PLaSK safe to download?
The download comes from get.plask.app, 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 PLaSK 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 PLaSK be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does PLaSK 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 PLaSK?
The versions page lists all 37 versions with links to their official installer files, back to January 9, 2024.
What are alternatives to PLaSK?
OpenTTD, RetroArch, Celestia, Steam and PPSSPP. The alternatives page compares them.
