Wyvern (*What You View, Engine Renders Natively*) opens OS-native webview windows for user interaction and returns structured JSON results. JSON in, JSON out — MCP-compatible from the ground up.
Publisher’s description
What is Wyvern?
Wyvern by Rand Lee is open-source Windows software in the languages & sdks category. It is written in Rust.
Installation and requirements
The publisher provides Portable installers for 64-bit Windows. It runs without installation (portable).
Updates and version history
The current version is 0.7.0, released on October 8, 2026. The version history goes back to October 27, 2026: 3 releases, all linked to the official files.
Project description on GitHub: “What You View, Engine Renders Natively”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
- Updated in the last two months
Cons
- No native ARM64 build
In short: Wyvern is an open-source languages & sdk tool for 64-bit PCs.
Is Wyvern 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:
A4E94411B9A21ACD7431FF94231D1974179CFD8852E7641C972AC8A4117D5D17· 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 3 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 0.7.0Latest | October 8, 2026 | — | 64-bit ZIP |
| 0.6.0 | September 14, 2026 | — | 64-bit ZIP |
| 0.5.0 | October 27, 2026 | — | 64-bit ZIP |
Install from the command line
Silent install ›winget install --id randlee.wyvern -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- Rand Lee
- Category
- Languages & SDKs
- Licence
- MIT
- Price
- Free
- Source code
- github.com/randlee/wyvern
- Written in
- Rust
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 0.7.0
- Released
- October 8, 2026
- Added to the catalogue
- September 14, 2026
- Versions listed
- 3
- Website
- github.com
- winget ID
- randlee.wyvern
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is Wyvern free?
Yes. Wyvern is open-source software under the MIT licence.
Is Wyvern 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 Wyvern 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.
Does Wyvern 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 Wyvern?
The versions page lists all 3 versions with links to their official installer files, back to October 27, 2026.
Can I use Wyvern without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to Wyvern?
Go Programming Language, LLVM, Deno, CMake and Yarn. The alternatives page compares them.
