Pacifist is a shareware application for macOS that opens .pkg package files, .dmg disk images, and compressed files such as .zip, .tar, .tar.gz, .tar.bz2, and .xar. The program displays the contents of these files and enables the extraction of individual items without needing to decompress or install the entire package. It facilitates the reinstallation of damaged system components without a complete operating system reinstallation. It allows the inspection of downloaded packages to verify their contents prior to installation. It includes functions to verify existing installations and locate altered or missing files. It examines installed kernel extensions to identify their origin.