XOXO WiFi - XOXO WiFi is a small and easy in use mobile router, which you can put it in your pocket and enjoy private, safe and truly unlimited Internet access at nearly every place in the world.

OpenSignal - Mobile analytics and insights on wireless connectivity from Opensignal, the independent global standard for understanding the true state of the world's mobile network.

PocketWiFi-Amsterdam - RENT a portable wifi hotspot for a travel to THE NETHERLANDS and EUROPE! €7 per day, unlimited data, delivery/pick up at hotel/Airbnb/Airport, 4G LTE, no roaming fees!

OpenCellID - OpenCelliD is the largest Open Database of Cell Towers & their locations. You can geolocate IoT & Mobile devices without GPS, explore Mobile Operator coverage and more!

Freenet Funk - Lade Dir jetzt die freenet FUNK App runter und buche ganz easy und bequem deinen Handytarif! Gleich lostelefonieren, surfen oder simsen.

wigle.net - WiGLE (Wireless Geographic Logging Engine)