NetInspector is a cross‑platform network inspection and visualization tool built with Python, PyQt5, Scapy, PyWiFi, and Matplotlib.
It combines LAN scanning, Wi‑Fi analysis, and real‑time signal visualization into a sleek dark‑themed interface.

• 🔍 LAN Scanner

  • ARP‑based discovery of devices on local subnets
  • Vendor lookup via MAC address (online API + offline fallback)
  • Progress tracking and stop/resume controls

• 📡 Wi‑Fi Scanner

  • Cross‑platform support (Windows, Linux, macOS)
  • Detects SSID, RSSI, frequency band, channel, security type, and BSSID
  • Real‑time updates with customizable refresh interval

• 🔑 Wi‑Fi Profiles

  • Retrieve saved Wi‑Fi SSIDs and passwords (Windows/macOS/Linux)
  • Handles tricky cases like trailing spaces in SSIDs
  • Displays security type alongside credentials

• 📊 Visualizations

  • Signal strength graph (RSSI over time per SSID)
  • Channel utilization bar chart (relative occupancy)
  • Futuristic dark‑mode styling with color‑coded legends

• Python 3.10.4+
• PyQt5
• Matplotlib
• Scapy (optional, for LAN scanning)
• PyWiFi (optional, for Wi‑Fi scanning)
• netifaces
• mac-vendor-lookup
• requests

Install dependencies:

pip install -r requirements.txt