Geotools
Reprojector
A tool that lets you compare the size of geographical shapes by moving them from one place to ⤏ another.
How Big
A tool that quickly lets you draw a circle or square with a given area on a map.
Gimme Geodata
A tool that gives you quick access to OpenStreetMap boundaries and other areas by simply clicking on a map.
Radius
Draw a circle with a given radius
Geo Sentences
A fast and simple geoprocessing tool