Travel & Location
Remember traveling before smartphone map apps? Breaking out travel maps, having to stop to reorient yourself on the road, and dreading coming off of a flight just to try and navigate a completely new area? Technology has alleviated this greatly, with apps such as Google Maps aiding in direct navigation and TripAdvisor helping you plan out the most important places to visit.
Most popular apps

Google Maps
Google Maps is a basic web mapping service application and technology provided by Google. It offers street maps, a route planner for traveling by foot, car, or public transport and an urban business locator for numerous countries around the world.

OpenStreetMap
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.

Google Earth
Google Earth lets you fly anywhere on Earth to view satellite imagery, maps, terrain, 3D buildings, from galaxies in outer space to the canyons of the ocean. You can explore rich geographical content, save your toured places, and share with others.

OsmAnd
OsmAnd is a map and navigation application with access to the free, worldwide, and high-quality OpenStreetMap data.

Organic Maps
Organic Maps is an Android & iOS offline maps app for travelers, tourists, hikers, and cyclists based on top of crowd-sourced OpenStreetMap data and curated with love by MAPS.ME founders.

Waze
Waze is a social GPS navigation app that allows drivers to build and use live maps & real-time traffic updates to improve their daily commute.

MAPS.ME
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.

QGIS
QGIS, formerly Quantum GIS, is a user friendly open source Geographic Information System (GIS) licensed under the GNU General Public License that runs on Linux, Unix, Mac OSX, and Windows and supports numerous vector, raster, and database formats and functionalities.