message-metadata-mirror is an open-source, self-hosted tool that analyzes and displays the metadata leaked by various messaging apps. It helps privacy-conscious users and security researchers understand potential privacy risks by providing detailed insights into what information is exposed. The tool is designed for local deployment and customization.
In the Other infrastructure space, message-metadata-mirror takes a focused approach. It focuses on understanding and exposing what personal metadata messaging apps leak to improve user privacy. It is built as an open-source project for privacy-conscious developers and security researchers. message-metadata-mirror is open source under the MIT license. message-metadata-mirror is available on the command line, and it can be self-hosted.
message-metadata-mirror first shipped in 2026. Key capabilities include privacy dashboard, metadata analysis, and self-hosted.
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