Fluxzy SAS

Fluxzy SAS is a French software publisher focused on network debugging and HTTP traffic inspection. The company’s sole product, Fluxzy, is an open-source MITM (man-in-the-middle) proxy that enables developers, QA engineers, and security researchers to capture, decrypt, and modify HTTP/1.1, HTTP/2, and WebSocket conversations in real time. Typical use cases include diagnosing mobile-app API issues, testing web-application resilience to malformed headers, simulating slow or unstable network conditions, auditing encrypted traffic for compliance, and teaching students the inner workings of modern application-layer protocols. The tool exposes a rule-based engine that can pause, rewrite, or redirect requests and responses without touching client code, making it popular for automated regression suites and penetration-testing workflows alike. Because it ships as both a command-line executable and a .NET library, teams embed it in CI pipelines or build custom traffic-mirroring appliances on Windows, Linux, or macOS. A built-in dashboard visualizes exchanged frames, certificates, and compression ratios, while HAR and PCAP export options simplify sharing evidence with stakeholders. The MIT license encourages forks that add proprietary filters or integrate with external loggers. All releases are published on the publisher’s GitHub page under the handle haga-rak. The publisher’s software is available for free on get.nero.com, with downloads delivered through trusted Windows package sources such as winget, always installing the latest versions and supporting batch installation of multiple applications.