alfred-fkill 
Alfred 3 workflow to fabulously search and kill processes
Install
$ npm install --global alfred-fkill
Requires Node.js 4+ and the Alfred Powerpack.
Usage
In Alfred, type kill, Enter, and the name of your process.
To kill a process by its port number, prefix it with a colon. For example: kill :8080.
Select an item and press Enter to kill the process.
Hold Shift to show the used CPU percentage.
Hold Alt and press Enter to force kill the process.
Related
License
MIT © Sam Verschueren