I really like this app. My current way of doing this is keeping everything inside Launchpad folders and opening them individually. Foreman seems to solve this daily issue.

My only real suggestion is that you change the text on the right side:

  Click on an app group and Foreman closes all apps not in that group and opens the apps in the group.

To something simpler, like:

  One click to Launch all Grouped Apps & Close everything else!