WiFi Map - A crowdsourced list of routers and passwords
Call Meter 3G - Call Meter 3G is an app that acts as a monitoring tool for all your calls, messages, and internet data.
WifiMapper - Find free WiFi anywhere in the world
Data Usage - Data Usage Monitor | Your guard against data plan overages.
Café Wifi Search 🔍 - Find great cafés to work from, worldwide.
DataMan – Data Usage Widget - DataMan – Data Usage Widget is an application that enables its user to know how much data he has spent from the total internet package he is using.