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Fluxzy is a MITM HTTP debugging proxy developed by Fluxzy SAS, currently at version 1.34.1.16860 and offered in five distinct releases, that equips developers and security testers with the ability to intercept, inspect, and modify HTTP/1.1, HTTP/2, and WebSocket traffic in real time. Positioned within the network debugging and web development tool category, the software acts as an intermediary between client applications and remote servers, decrypting TLS traffic on the fly and exposing every request, response, header, and payload for granular analysis. Typical use cases range from troubleshooting elusive API integration failures and verifying mobile app back-end calls to reproducing edge-case caching issues, auditing third-party script behavior, and performing penetration-testing workflows where altering headers or injecting faults is essential. Because it supports both legacy HTTP/1.1 and modern multiplexed H2 streams, as well as full-duplex WebSocket conversations, Fluxzy provides a unified view of contemporary web traffic without requiring additional plugins or protocol-specific extensions. The proxy can be launched as a standalone desktop utility or embedded into automated CI pipelines through its command-line interface, allowing engineers to capture traffic artifacts alongside unit tests and to assert correct network behavior before code reaches production. Certificate pinning bypasses, traffic recording snapshots, and rule-based modification scripts further extend its utility for regression testing and security research. Across its five published versions the tool has refined decryption performance, added support for emerging TLS cipher suites, and introduced configurable dashboards that let teams share capture sessions and annotate findings collaboratively. Fluxzy is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version and supporting batch installation of multiple applications.
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