WorldMap, developed by the Center for Geographic Analysis (CGA) at Harvard, is a web-based platform to enable scholars to work with geospatial information.
Intended to fill a niche between big GIS applications and lightweight map interfaces, WorldMap can be used as a tool to visualize, edit, collaborate, and publish maps. When publishing a map, you can provide an abstract and other relevant information, making this a particularly apt scholarly tool. Additionally, you can choose to publish the map for the public, or share it only with a few collaborators.
With WorldMap, you can also work with large datasets, overlay them with thousands of other layers, export data, link maps to rich media content, and georeference paper maps online via WorldMap WARP.
WorldMap is an open-source platform with full source code available here. The developers are interested in engaging with users of the tool and in expanding on its functionality.