I'm trying to find a self-hosted web app that allows you to view a number of raster and vector layers on a draggable web map, and then to 'annotate' the map by adding points to the map with associated textual information.
The first part of this is really easy - any sort of web mapping tool will do it. But I can't seem to see any self-hosted tool that will allow that sort of easy annotation?
Part of the issue here is that the users won't be experienced with GIS at all - so going down the path of a full online GIS system isn't really feasible. I'm sure some sort of tool like this must have already been written - does anyone have any suggestions, before I give up and write my own?