Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.

WiFi Map - A crowdsourced list of routers and passwords

WhosCall - WhosCall is a reliable caller ID app whose popularity has led to its adoption by many users including international media. You can now manage the numbers calling you regardless of whether they are part of your contact list or not... read more.

Café Wifi Search 🔍 - Find great cafés to work from, worldwide.

CallApp - Free Caller ID & Call Blocker app that allows mobile users to block phone calls, identify calls, blacklist unwanted callers and much more.

Instabridge - Crowdsourced free wifi (now on Android)