Technically, plugins are separate apps that communicate with Workspaces. They might work as actions (custom resources) and/or commands (additional commands in the Search window).
To install a plugin, download it and drag and drop the file on plugin list
in Preferences -> Plugins.
If you want, you can also store your plugins in /Applications directory.
Runs shell scripts inside Workspaces.
Build your project, deploy it, make a cup coffee, turn the light off. It's up to you and your script.
Quickly add to your workspace websites open in Safari, Chrome, visible folders in Finder or all the open apps.
To start enter
:addcommand and you'll see possible variations, e.g.
Play a favourite playlist in Music app and get into the mood right away.
Or pause it when you finish your work.
Quit chosen apps instantly.
Get rid of all the distractions. Or quit all apps and be even more focused on your work.