Pacifist is a powerful multi-tool for working with macOS package files, disk images, and file archives. Using Pacifist, you can:

• open a wide variety of file archives, including:
  • macOS .pkg package files,
  • .dmg disk images,
  • macOS asset catalogs,
  • Mac OS 9 Installer Tome files, and
  • .zip, .tar, .tar.gz, .tar.bz2, .xar, and .yaa archives,
• examine and extract individual files and folders,
• inspect install scripts and other package resources to make sure that a package is trustworthy before installing it,
• analyze existing installations on your system, to help you determine who installed a particular file on your system,
• view archive contents straight from the Finder via QuickLook,
• view and extract files from archives via your choice of a slick GUI or an automation-friendly command-line interface, and even
• inspect the contents of .zip files (and other supported types) over the Web without downloading the entire archive first.