I keep getting asked about mapping and navigation tools I use on both my phone and computer. None are a total substitute for a map and compass and knowing how to navigate but they certainly make life easier sometimes!
** Star Pick**: Maverick
OS mapping with offline cache, GPS, compass, route planning, GPX upload and download. If you have an Android phone and like being outdoors... GET IT.
Where's The Path
This is my go-to route planning tool. Side by side maps for which you can select different map bases like OS 50k, OSM, Google Earth etc. Route planning, elevation, GPX import and export. Really good.
Freely available OS maps down to 25k. Limited exporting and no route planning but a good starting point for a browse.
Good for road cycle route planning.
Now that some of the 3D Google Earth functionality has been integrated into Google Maps it makes for a great experience. Look at any high rise city in 3D mode and it's like flying over it like a bird. Fantastic.
For Android. Gives you a grid reference. and a compass reading. Simple and effective!
Good for answering the question "what hills can you see from the top of Rum Doodle". See also this site.
https://www.windytv.com - global weather and forecasting, wind speed, temperature, cloud base, wave height, ocean currents with an intuitive interface. Fascinating and you can lose hours to watching typhoons rolling around the Pacific.