Portscanner is a Mac app for quickly identifying open ports on a host. There is a 100 port limit in the demo version. It is a user-friendly tool.
One potential downside worth noting is that the demo version of the app does come with a limitation: users can only check up to 100 ports. Depending on your specific needs and use case, this may or may not be a dealbreaker.
Overall, Portscanner is a solid choice for anyone looking for a reliable port scanning solution on their Mac. Its intuitive interface and efficiency make it a tool worth considering.