FRITZ!App WLAN Alternatives

NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting

inSSIDer Essential makes it easy to maintain small business WiFi.

Powerful SaaS integration toolkit for SaaS developers - create, amplify, manage and publish native integrations from within your app with Cyclr's flexible Embedded iPaaS.

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WiFi Analyzer. See your WiFi signal on a visually comprehensive map and make sure you are getting the best of your network

WiFi analyzer providing details like frequency, channel, modem manufacturer and more.

Wifi Analyzer is a handy tool which helps you to select a better channel for your wireless router.

Vistumbler is a wireless network scanner for Windows Vista and Windows 7. Features:

Open Source

With Homedale you can search for Wi-Fi / WLAN Access Points and monitor their signal strength.

WiFi Explorer is a tool to scan, find, and troubleshoot wireless networks.

Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system.

Toshiba Bluetooth Stack comes packing the software and complementary drivers needed by Toshiba...

Easy Network Management At Your Fingertips!

Scan your wifi network and obtain troubleshooting details, with extreme granularity - using a colorful command-line tool. - GitHub - angela-d/wifi-network-testing: Scan your wifi network and obtain...

Official source of information about Netstumbler.