A fast and secure runtime for WebAssembly
Publisher’s description
What is Wasmtime?
Wasmtime is an open-source languages & sdk program for Windows from Crane Station. It is written in Rust.
Installation and requirements
Official installers exist for 64-bit as MSI. The installer supports unattended (silent) installation. An MSI package is available for deployment with Group Policy, Intune or Configuration Manager.
Updates and version history
The current version is 50.0.0, released on October 20, 2026. 115 versions are listed since December 21, 2022, each with links to its own installer files. That is about 30 releases a year. The last update is less than a month old.
Popularity and file types
The source code on GitHub (bytecodealliance/wasmtime) has 18,746 stars. On Windows it registers 1 file type, including .wasm. Similar programs include Go Programming Language, LLVM and Deno.
Project description on GitHub: “A lightweight WebAssembly runtime that is fast, secure, and standards-compliant”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- MSI package for managed deployment
- Documented silent install
- Frequent updates (about 30 a year)
- Large user base
Cons
- No native ARM64 build
In short: Wasmtime is an open-source languages & sdk tool for 64-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is Wasmtime 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:
78B668593E536B84B8896F988282DA625BD3C164B39582CF585E2DE866F9569A· 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
Security practices (OpenSSF Scorecard)
Automated checks of the bytecodealliance/wasmtime repository on GitHub by the Open Source Security Foundation, last run on October 19, 2026.
- Actively maintained10
- Security policy10
- Code review10
- No dangerous workflows10
- No binaries in the repository10
- Licence declared10
- Fuzzing10
- Published packages10
- Branch protection4
- Restricted token permissions0
- OpenSSF Best Practices badge0
- Signed releases0
- Static code analysis0
- Pinned dependencies0
The score rates how the project is developed and released, not whether the program is safe to install. scorecard.dev
Recent versions
All 115 versions ›115 versions over 4 years · about 30 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 50.0.0Latest | October 20, 2026 | — | 64-bit MSI |
| 49.0.4 | October 19, 2026 | — | 64-bit MSI |
| 49.0.3 | October 14, 2026 | — | 64-bit MSI |
| 49.0.2 | October 2, 2026 | — | 64-bit MSI |
| 49.0.1 | September 24, 2026 | — | 64-bit MSI |
| 49.0.0 | September 21, 2026 | — | 64-bit MSI |
| 48.0.2 | September 10, 2026 | — | 64-bit MSI |
| 48.0.1 | August 24, 2026 | — | 64-bit MSI |
Install from the command line
Silent install ›winget install --id BytecodeAlliance.Wasmtime -emsiexec /i wasmtime-v50.0.0-x86_64-windows.msi /qn /norestartmsiexec /x {4172FBC5-49D2-4EC0-8A9A-C234F8B1F1FC} /qn /norestartProgram files (.exe): wasmtime.exe
Related guide: How to use winget: install and update apps
Also for other systems
brew install wasmtimeInformation
- Publisher
- Crane Station
- Category
- Languages & SDKs
- Licence
- Apache-2.0
- Price
- Free
- Source code
- github.com/bytecodealliance/wasmtime
- Written in
- Rust
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- MSI
- Version
- 50.0.0
- Released
- October 20, 2026
- Added to the catalogue
- December 27, 2022
- Versions listed
- 115
- Updates / year
- 30
- GitHub stars
- 18,746
- GitHub forks
- 1,879
- Website
- wasmtime.dev
- winget ID
- BytecodeAlliance.Wasmtime
- MSI product code
- {4172FBC5-49D2-4EC0-8A9A-C234F8B1F1FC}
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 Wasmtime free?
Yes. Wasmtime is open-source software under the Apache-2.0 licence.
Is Wasmtime 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 Wasmtime 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 Wasmtime be installed silently?
Yes. The silent install page lists the exact command for each installer, including msiexec for the MSI package.
Does Wasmtime 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 Wasmtime?
The versions page lists all 115 versions with links to their official installer files, back to December 21, 2022.
What are alternatives to Wasmtime?
Go Programming Language, LLVM, Deno, CMake and Yarn. The alternatives page compares them.
