Looks like this tool executes 'caffeinate -i -d' There are a couple of similar apps on the Mac App Store, but this is the only open source app I'm aware of. I

Looks like this tool executes 'caffeinate -i -d' There are a couple of similar apps on the Mac App Store, but this is the only open source app I'm aware of. I also like the icon. If you have a Mac, and don't know about caffeinate, go read the man page now! You can also use it with a command argument, eg. 'caffeinate make', to make sure your Mac doesn't sleep until the command is finished.