Qwasap - A Telegram bot that lets you talk to people who are located anywhere in the world.
Foursquare - Foursquare is all about helping you find new ways to explore your city.
Jodel - What is Jodel all about? Jodel is the community that shows you what's happening in your area in real-time.
Tripadvisor - The Tripadvisor mobile app is available for the Android and iOS platforms. It can be used to create reviews of hotels, restaurants, and to chat with other travelers on Tripadvisor forums.
Roomvine - Chatrooms for real life venues, neighborhoods and events
Yellow Pages - YP.com local search connects you with over 19 million local businesses.