-
http://mapki.com/wiki/Google_Map_Parameters
Very handy page that contains a list of all the url parameters for Google Maps allowing the easy creation of custom maps without a google account. :-)
-
http://sites.google.com/site/mappingscotland/
John Tuach's mapping scotland google site.
-
http://code.google.com/p/google-maps-icons/
A whopping 900 map icons, released under the GPLv3. Colour coded, categorised, and all sorts.
-
http://www.daftlogic.com/projects-google-maps-distance-calculator.htm
Simple google maps ruler, click two points and it tells you the distance between then.
-
http://code.google.com/p/gmapcatcher/
An AWESOME piece of code that creates a python based gui google maps browser and auto-downloader for offline user. Really, really, really useful. :-)
-
http://www.freemaptools.com/measure-distance.htm
Handy google map that has a ruler. Drop points on the map and it calculates a running total of the distance between them.
-
http://upload.wikimedia.org/wikipedia/commons/e/e5/World_map_with_equator.svg
A CC-BY-SA licensed world map with the equator marked courtesy of wikiCommons. Could be useful for building other maps.
-
http://en.wikipedia.org/wiki/Ramer-Douglas-Peucker_algorithm
The Ramer-Douglas-Peucker algorithm allows a curve to be reduced to fewer points with minimal distortion. Useful in mapping to simplify plots based on zoom level.
-
http://www.openlayers.org/
OpenLayers ia a pure Javascript mapping library that uses a number of commercial / open tile providers but creates its own API completely bypassing the commercial API.
-
http://openlayers.org/pipermail/dev/2008-April/002756.html
Comparison of Mapstraction and OpenLayers from an OpenLayers developer. Useful and balanced discussion of the differences.
-
http://www.mapstraction.com/
Mapstraction is a library that provides a common API for various javascript mapping APIs to enable switching from one to another as smoothly as possible.
-
http://cloudmade.com/
CloudMade are a mapping technology company built by some of the people behind OpenStreetMap.org, using that data as a base. Professional open source mapping services.
-
http://weatherbonk.com/
Weather route planning, pretty awesome stuff... :-)
-
http://www.navicoretech.com/Consumer/Support/Downloads/tablet/en_GB/wfnavigator/
Download maps for the Map application on the N810 tablet without using the in-built software. Very useful. :-)
-
http://www.openstreetmap.org/
OpenStreetMap is a free editable map of the whole world. It's a wiki-like map which users can edit. You can upload GPS traces of areas and add street names, etc. Eat your heart out Google Maps.
-
http://www.multimap.com/