All of iStumbler's major functionality is implemented in separate modules. Each plugin has it's own main view, preferences view for configuring the plugin and an inspector panel to show detail on a selected item.
- AirPort plugin displays signal strength and debugging information for visible AirPort networks.
- Bluetooth plugin displays information for bluetooth devices in use on the system.
- Location plugin provides location information to the Wi-Fi plugin and provides access to maps and location based services on the web.
- Log plugin tracks events in iStumbler and can optionally write a log to disk for later review.
- Bonjour plugin allows you to browse Bonjour services and hosts on your local network.
- Text Size: sets the text size for the entire application.
- Toolbar Style: sets the toolbar style for all plugins.