Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.
OpenWiFiSpots - Hotspot location app
Debookee - Debookee is the simplest & most powerful network traffic analyzer for macOS.
Wi-Fi Space - Hotspot location app
SmartSniff - SmartSniff is a packet sniffer that capture TCP/IP packets and display them as sequence of conversations between clients and servers.
pttrns - iPhone and iPad user interface patterns