Apps similar to Fieldary include uMap, which is free and open source. Other options are Mapstr and Google My Maps. In total there are three Map Services like Fieldary for the web, Android, iPhone and self-hosting.
uMap let you create maps with OpenStreetMap layers in a minute and embed them in your site. Add custom annotations, lines, shapes, import and add custom layers (KML, CSV, GPS, ...) and other data.
France
EU
Mapstr lets you keep track of all your favorite places around the world, tag them, and find them on your very own map.
FranceEU
Create custom maps to share and publish online with Google My Maps. You can make maps that show different kinds of information.
United States
