Harbor
Answers the EADDRINUSE moment: type a port to learn it's free (or who holds it, by project), get the next free port, and kill with verified feedback.
Records that name ki11e6 as author. Nothing here is inferred from a screenshot.
Answers the EADDRINUSE moment: type a port to learn it's free (or who holds it, by project), get the next free port, and kill with verified feedback.