[mejackreed]

I would like to add that @mourner, Leaflet creator, gave a great talk last week in San Francisco about why he started Leaflet and how the open source community developed around it. Talk is here (http://www.youtube.com/watch?v=bQAl43Aj_B0&feature=youtu.be).

One thing that I think is missing from this article is the communities around these projects and release cycles. Leaflet by far has the most active community around it. Where Open Layers 3 has been chugging along without a release for a while, and Google Maps API has remained pretty stagnant. A great post from Keir Clarke (http://googlemapsmania.blogspot.com/2014/01/the-slow-death-o...) that is spot on.