NetWorker is a menu bar network monitor with bandwidth tracking, external IP checks, customizable widgets, dark mode, and overlay support.

WhyFi — Your menu-bar Wi‑Fi detective. Keep your Mac’s Wi‑Fi fast and reliable without the guesswork. WhyFi lives in your menu bar and continuously monitors signal, router latency, internet quality, and DNS so you can see exactly what’s

Little Snitch is a network monitor, personal firewall, and Mac app blocker that lets you allow or deny every connection.