Google Street View!

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.

Yandex.Maps gives you access to maps of over 1800 cities and towns right in your pocket. Find addresses and companies. Plan your journeys in a car or on public transport taking current traffic conditions into account. Keep tabs on what's happening on the road as you travel – view traffic jams, road closures or accidents on your way.

Maps gives you turn-by-turn spoken directions, interactive 3D views, and Flyover. All in a vector-based interface that scales and zooms with ease.Maps also gives you guidance to take public transportation and helps you explore your surroundings, so you always know what's around you.

This is OpenStreetCam.orgOpenStreetCam is a free and open platform for street level imagery. Anyone can contribute images with a smartphone and the open source apps.

GMap.NET is great and Powerful, Free, cross platform, open source .NET control. Enable use routing, geocoding, directions and maps from Google, Yahoo!, Bing, OpenStreetMap, ArcGIS, Pergo, SigPac, Yandex, Mapy.cz, Maps.lt, iKarte.lv, NearMap, OviMap, CloudMade, WikiMapia, MapQuest in Windows Forms & Presentation, supports caching and runs on windows mobile!

Navit is an open source car navigation software for Linux, Windows systems and portable devices. It will display your position on a map (in bird-view mode or as a 3D "visualization") from GPS sensor data, and can provide precise route calculation, touch screen functionality and supports Points of Interest (POI), which can be extended via an easy to use plugin system. Unlike other navigation systems, Navit maps are dynamically generated in real time from vector data. Navit is completely offline and works without an internet connection. Navit respects your privacy and does not track your position. »

Modest Maps is a small, extensible, and free library for designers and developers who want to use interactive maps in their own projects. It provides a core set of features in a tight, clean package with plenty of hooks for additional functionality.

TransforMap works towards an online platform for you to visualize the myriads of alternatives to the dominant economic thinking on a single mapping system.

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.

Navmii is a free navigation and traffic app for drivers.

GPS Navigation & Maps - Scout (formerly known as "skobbler") contains premium turn & voice guidance, dynamic INRIX traffic intelligence and rich global maps and travel guides.

RMaps is the navigation tool. You can use RMaps like online map viewer for some popular maps. And like offline map viewer for your own maps created on the PC.