LLRT (Low Latency Runtime) is an experimental, lightweight JavaScript runtime designed to address the growing demand for fast and efficient Serverless applications.
Publisher’s description
What is LLRT?
LLRT by Amazon Web Services is open-source Windows software. It is written in Rust.
Installation and requirements
The publisher provides Portable installers for 64-bit Windows. It runs without installation (portable).
Popularity and file types
The source code on GitHub (awslabs/llrt) has 8,821 stars.
Project description on GitHub: “LLRT (Low Latency Runtime) is an experimental, lightweight JavaScript runtime designed to address the growing demand for fast and efficient Serverless applications.”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
- Large user base
Cons
- No native ARM64 build
In short: LLRT is an open-source Windows tool for 64-bit PCs.
Is LLRT 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:
28108946CE8C0D849D2AD7D9A25921AACFE33DE0CDE144C7954EBBC39B50B6EE· 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 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 0.8.1-betaLatest | February 20, 2026 | — | 64-bit ZIP |
Install from the command line
Silent install ›winget install --id Amazon.LLRT -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- Amazon Web Services
- Licence
- Apache-2.0
- Price
- Free
- Source code
- github.com/awslabs/llrt
- Written in
- Rust
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 0.8.1-beta
- Released
- February 20, 2026
- Added to the catalogue
- May 8, 2026
- Versions listed
- 1
- GitHub stars
- 8,821
- GitHub forks
- 397
- Website
- github.com
- winget ID
- Amazon.LLRT
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is LLRT free?
Yes. LLRT is open-source software under the Apache-2.0 licence.
Is LLRT 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 LLRT 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 LLRT run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Can I use LLRT without administrator rights?
Yes, it is portable: unpack and run it.
