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Looking for a way to crowd-source polygon creation on GMaps (in a wiki environment) that doesn't involved ESRI's expensive server software.

- a bunch of different wiki pages can be updated with a map showing a single polygon. - all the polygons over the entire site are combined into one master map - preferably everything in KML so Fusion Tables can be involved for styling, but not necessary

Any ideas?

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up vote 1 down vote accepted

I'd recommend taking a look at CartoDB. It basically provides a hosted instance of PostgreSQL, and sports a fairly easy to use API. I've seen it combined nicely with the Google Maps API Drawing Library (see this for an example)

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Thanks. That looks like it should do it. – Josh Apr 14 '13 at 13:36

You can use OpenLayers, Geoserver and PostgreSQL to build a application like this.

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Check out It provides a process and method for crowdsourcing vectorized GIS data from overhead imagery.

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It looks like it would require ugly hacks to integrate into a web site (supports only manual downloading?). Anyway, the OP wasn't clear if the wiki would be just a dumping ground or an integral part of an ongoing process, but it may well be an insurmountable burden for this piece of software. – lynxlynxlynx Apr 11 '13 at 19:52
I'm not looking to pay people to crowd-source the information which ooze seems to be. The information would come from users of the site and their personal knowledge. – Josh Apr 14 '13 at 13:34

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