KeplerJs!

OpenStreetMap is a project aimed squarely at creating and providing free geographic data such as street maps to anyone who wants them. It is a free editable map of the whole world. It is made by people like you. It allows you to view, edit and use geographical data in a collaborative way from anywhere on Earth.

OsmAnd is a map and navigation application with access to the free, worldwide, and high-quality OpenStreetMap data.Enjoy voice and optical navigator, viewing POIs (points of interest), creating and managing GPX tracks, using contour lines visualization and altitude info (through plugin), a choice between driving, cycling, pedestrian modes, OSM editing and much more.

MAPS.ME offers the quickest offline maps of all the countries of the world. Travel with full confidence: wherever you are, MAPS.ME addresses all your offline mapping needs.

HERE WeGo is a free app that makes city navigation effortless. With detailed routes, turn-by-turn guidance and information about every way of getting around, it’s the only app you need to get through the city.

"Citymapper is, quite simply, the best travel app to be introduced to New York City" - New York Times

Get where you need to go with the MapQuest GPS and navigation app. Whether it’s using turn-by-turn voice navigation for walking or driving directions, booking a ride through a variety of transportation options (including Uber and car2go), or using local transit*, MapQuest has the tools you need to navigate your world how you want.

OruxMaps is an online/offline map viewer and track logger for Android.You can use OruxMaps for your outdoor activities (running, trekking, mountain bike, paragliding, flying, nautic sports, etc.)

An amazing map app based on OpenStreetMap.org, the free wiki world map. Find out more at http://izeize.com/openmaps/

GeoNode is a web-based application and platform for developing geospatial information systems (GIS) and for deploying spatial data infrastructures (SDI).