| d3-polygon | 3.0.0 | Operations for two-dimensional polygons. |
| gojs | 3.0.0 | Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams |
| leaflet.freedraw | 2.0.1 | Zoopla inspired freehand polygon creation using Leaflet.js. |
| leaflet.pm | 2.2.0 | A Leaflet Plugin For Editing Geometry Layers in Leaflet 1.0 |
| Turf.js | 6.5.0 | a node.js library for performing geospatial operations with geojson |
| polylabel | 1.1.0 | A JS library for finding optimal label position inside a polygon |
| polyavatar | 0.8.0 | Simple plugin to generate polygonal avatars with customization options. |