WiFi Analyzer by Olgor: A free Android app offering real-time scans, interference checks, and 2.4/5/6GHz support. Perfect for quick Wi-Fi checks at home
NetSpot (Free & Pro): Available on Windows, macOS, and Android, it provides signal heatmaps and full surveys for both basic users and professionals
Fing – Network Tools: Great for Android and iOS users, Fing identifies connected devices, runs speed tests, and checks for network intrusions
WiFi Analyzer (Hafner): Open-source and user-friendly, this app shows channel congestion and live graphs—ideal for home users and small offices
Network Analyzer Pro: A premium tool for Android and iOS that scans ports, locates devices, and gives detailed signal data for advanced users
Paessler PRTG: Enterprise-grade app supporting multiple platforms. Offers real-time alerts, traffic analysis, and deep network insights
Wireshark: Free and highly advanced, it’s a favorite among professionals for deep packet inspection and protocol-level diagnostics