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ProxyPin is an open-source, free network diagnostic utility developed by wanghongenpin that enables developers, testers, and security analysts to intercept, inspect, and analyze HTTP and HTTPS traffic passing through Windows systems. Currently at version 1.2.6 build 29 and already on its seventh public iteration, the program functions as a transparent local proxy, presenting decrypted TLS streams in real time so users can troubleshoot API calls, debug mobile or desktop applications, verify web service responses, and detect unexpected data leakage without altering client code. Typical scenarios include recording REST or GraphQL sequences during integration testing, confirming header and cookie behavior across redirects, comparing compression ratios, auditing third-party scripts embedded in sites, and exporting captured sessions as HAR or raw files for later replay in performance suites. Because it operates at the system level, ProxyPin can capture traffic from browsers, background services, or virtualized Android emulators running on the same machine, while its filtering engine allows exclusion of irrelevant domains to keep logs focused. The interface shows request/response timelines, status codes, payload sizes, and timing metrics, and supports full-text search within bodies so engineers can quickly locate authentication tokens, error messages, or specific JSON fields. As an open-source project under active maintenance, each release refines protocol support and UI responsiveness, ensuring compatibility with evolving cipher suites and Windows updates. ProxyPin 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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