Run Web Start based applications after the release of Java 11
Publisher’s description
What is OpenWebStart?
OpenWebStart is an open-source languages & sdk program for Windows from Karakun AG. It is written in Java.
Installation and requirements
Official installers exist for 64-bit as EXE. Installation asks for administrator rights. The installer supports unattended (silent) installation.
Updates and version history
The current version is 1.14.0, released on July 6, 2026. 15 versions are listed since June 4, 2021, each with links to its own installer files. That is about 2.9 releases a year.
Popularity and file types
The Chocolatey package has been downloaded 18,514 times. The source code on GitHub (karakun/OpenWebStart) has 531 stars. On Windows it registers 1 file type, including .jnlp. Similar programs include Go Programming Language, LLVM and CMake.
Project description on GitHub: “Run Web Start based applications after the release of Java 11”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: OpenWebStart is an open-source languages & sdk tool for 64-bit PCs. Administrators can deploy it unattended.
Is OpenWebStart 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:
1088D635E685CD4161F2D900F1E20D564DA33138934B338060DDB8D826EB3C99· 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 15 versions ›15 versions over 5 years · about 2.9 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 1.14.0Latest | July 6, 2026 | — | 64-bit EXE |
| 1.13.0 | November 30, 2025 | — | 64-bit EXE32-bit EXE |
| 1.12.0 | May 28, 2025 | — | 32-bit EXE64-bit EXE |
| 1.11.1 | February 7, 2025 | — | 32-bit EXE64-bit EXE |
| 1.11.0 | November 27, 2024 | — | 64-bit EXE32-bit EXE |
| 1.10.1 | June 13, 2024 | — | 32-bit EXE64-bit EXE |
| 1.9.1 | February 12, 2024 | — | 64-bit EXE32-bit EXE |
| 1.9.0 | December 3, 2023 | — | 32-bit EXE64-bit EXE |
Install from the command line
Silent install ›winget install --id karakun.OpenWebStart -echoco install openwebstart -yOpenWebStart_windows-x64_1_14_0.exe -qRelated guide: How to use winget: install and update apps
Also for other systems
brew install --cask openwebstartInformation
- Publisher
- Karakun AG
- Category
- Languages & SDKs
- Licence
- GPL2 with the Classpath Exception
- Price
- Free
- Source code
- github.com/karakun/OpenWebStart
- Written in
- Java
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE
- Version
- 1.14.0
- Released
- July 6, 2026
- Added to the catalogue
- June 4, 2021
- Versions listed
- 15
- Updates / year
- 2.9
- Chocolatey downloads
- 18,514
- GitHub stars
- 531
- GitHub forks
- 63
- Website
- openwebstart.com
- winget ID
- karakun.OpenWebStart
- Chocolatey package
- openwebstart
File types it opens (1)
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is OpenWebStart free?
Yes. OpenWebStart is open-source software under the GPL2 with the Classpath Exception licence.
Is OpenWebStart 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 OpenWebStart 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 OpenWebStart be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does OpenWebStart 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 OpenWebStart?
The versions page lists all 15 versions with links to their official installer files, back to June 4, 2021.
What are alternatives to OpenWebStart?
Go Programming Language, LLVM, CMake, Deno and Yarn. The alternatives page compares them.
