MITM HTTP debugging proxy for intercepting and altering HTTP/1.1, H2, and WebSocket traffic
Publisher’s description
What is Fluxzy?
Fluxzy by Fluxzy SAS is open-source Windows software in the api & web development category. It is written in C#.
Installation and requirements
The publisher provides Portable installers for 64-bit, ARM64 and 32-bit Windows. It runs without installation (portable).
Updates and version history
The current version is 1.39.48.18975, released on September 9, 2026. The version history goes back to December 19, 2025: 14 releases, all linked to the official files.
Popularity and file types
The source code on GitHub (haga-rak/fluxzy.core) has 372 stars. Similar programs include Insomnia, Bruno and Yaak.
Project description on GitHub: “Fast and fully streamed Man-On-The-Middle to intercept, record, impersonate and alter HTTP/1.1, H2, websocket and gRPC traffic.”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Native ARM64 build for Windows on Arm
- Portable: runs without installation
- Updated in the last two months
In short: Fluxzy is an open-source api & web development tool for 64-bit, ARM64 and 32-bit PCs.
Is Fluxzy 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:
A9DAA80949C682D081800B10DC0BBF4468AB3F85DC30450C981D73B9B95CD74E· 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 14 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 1.39.48.18975Latest | September 9, 2026 | — | 64-bit ZIPARM64 ZIP32-bit ZIP |
| 1.39.47.8025 | August 8, 2026 | — | 32-bit ZIP |
| 1.39.46.4170 | August 7, 2026 | — | 32-bit ZIP |
| 1.39.45.50076 | July 25, 2026 | — | 32-bit ZIP |
| 1.38.20.31283 | June 21, 2026 | — | 32-bit ZIP |
| 1.37.2.44521 | June 7, 2026 | — | 32-bit ZIP |
| 1.36.55.6882 | May 7, 2026 | — | 32-bit ZIP |
| 1.35.26.32388 | April 16, 2026 | — | 32-bit ZIP |
Install from the command line
Silent install ›winget install --id Fluxzy.Fluxzy -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- Fluxzy SAS
- Category
- API & web development
- Licence
- GPLv3
- Price
- Free
- Source code
- github.com/haga-rak/fluxzy.core
- Written in
- C#
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, ARM64, 32-bit
- Installer
- Portable
- Version
- 1.39.48.18975
- Released
- September 9, 2026
- Added to the catalogue
- December 19, 2025
- Versions listed
- 14
- GitHub stars
- 372
- GitHub forks
- 29
- Website
- github.com
- winget ID
- Fluxzy.Fluxzy
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is Fluxzy free?
Yes. Fluxzy is open-source software under the GPLv3 licence.
Is Fluxzy 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 Fluxzy 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 Fluxzy run on ARM (Windows on Arm)?
Yes, there is a native ARM64 installer.
Where can I download an older version of Fluxzy?
The versions page lists all 14 versions with links to their official installer files, back to December 19, 2025.
Can I use Fluxzy without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to Fluxzy?
Insomnia, Bruno, Yaak, HTTPie and RenderDoc. The alternatives page compares them.
