jamoa

A macOS archiver that keeps filenames intact between Mac and Windows. When compressing, every name is normalized to NFC and flagged as UTF-8, so Korean, Japanese and other composed names stay readable on Windows. When extracting, archives that carry names without an encoding declaration are previewed first: jamoa guesses the legacy encoding (CP949, Shift_JIS, GB18030, Big5 and more) and lets you switch it with a live preview. It creates and opens ZIP, 7Z and the TAR family, and supports AES-256 ZIP encryption and the Finder right-click menu. Files never leave your Mac, and the only network request is the update check you ask for.