Postal a fully featured open source mail delivery platform for incoming & outgoing e-mail. Postal is a complete and fully featured mail server for use by websites & web servers. Think Sendgrid, Mailgun or Postmark but open source and ready for you to run on your own servers.
Homebrew the missing package manager for macOS. A CLI workflow for the administration of macOS applications distributed as binaries. Homebrew-Cask extends Homebrew and brings its elegance, simplicity, and speed to the installation and management of GUI macOS applications such as Atom and Google Chrome.