Add up to 10,000 lines,shapes, or markers in different symbols and icons.Nine background map styles to choose from.Add photos and video to your map. Excellent for embedding on a website or blog. See the UCD Library guide on using Google MyMaps here: libguides.ucd.ie/findingmaps/show_your_data
GPS Visualizer is an online utility that creates maps and profiles from geographic data. It is free and easy to use, yet powerful and extremely customizable. Input can be in the form of GPS data (tracks and waypoints), driving routes, street addresses, or simple coordinates. Use it to see where you've been, plan where you're going, or quickly visualize geographic data (scientific observations, events, business locations, customers, real estate, geotagged photos, etc.
Harvard WorldMap is an online, open source mapping platform developed to lower barriers for scholars who wish to explore, visualize, edit, and publish geospatial information. The system attempts to address the gap between desktop GIS which is generally light on collaboration, and web-based mapping systems which often don't support the inclusion of large datasets.