Visual communication software
To manually install OmniGraffle with Homebrew, use the following command:
Current version of OmniGraffle.app: 7.5
ARM: https://downloads.omnigroup.com/software/MacOSX/10.11/OmniGraffle-7.5.dmg
Intel: https://downloads.omnigroup.com/software/MacOSX/10.11/OmniGraffle-7.5.dmg