GoogleMaps is a very easy way to add a map into your Plone site, but it is so boring to see the very same GMap style everywhere. If you want to create light and sexy maps, and you are not a GIS ...
rich feature set, • Usually about 1 MB of JavaScript, • Does not play nice with mobile devices, • Supports all the OGC standards and protocols (WMS, WFS... known as W*S). OpenLayers
you provide? Good, I would like this map, which projections do you offer? I can produce this list of maps Oh quite a lot, what about this very specific projection which is ideal for the North-West of Kazakhstan?
square (x0, y0, x1, y1)? Hey, did you watch the game yesterday? Sure, as GIF or PNG? No, he had to stop for a few months, because he broke his leg. Yes, it was nice. Do your son still play football?
support No interaction but excellent for mini maps. Very very easy to use (with htmapl.js): <div class="map" data-center="51.982924,5.913906" data-zoom="13" /> ModestMaps
support – Complete collective.js.leaflet • Simple API • GeoJSON • Very active project, with lot of plugins (editor toolbar, Google layers, projections...) Leaflet