Wadeson Island Map

Leaflet provides the map library (BSD-2-Clause) and draw tools (MIT)

Tolon's Leaflet EdgeBuffer plugin (MIT) makes panning less painful

domoritz's Leaflet geolocation control (MIT) lets you see where you are on the map (if the device supports it)

Google's map tiles (if enabled) are highly proprietary and need no explanation. IvanSanchez provides software (Beer-ware) for integrating their tiles into leaflet maps in a TOS-compliant manner.

ESRI provides a sweet collection of ArcGIS tiles through a leaflet plugin (Apache-2.0)

LINZ supplies a wicked set of tiles which are licensed CC-BY-4.0 under crown copyright

Mapbox provides the leaflet-geodesy plugin (BSD-2-Clause) which helps to perform distance and area measurement with probably slightly higher accuracy than what leaflet itself does

Mapbox also provides a GPX/KML/whatever to GeoJSON plugin which came in handy and is available under a BSD-2-Clause

Settings icon from UXWing and free for use without direct attribution

favicon converted quickly with favicon.io

1943, 1951 and 1988 map tiles are derived from LINZ's imagery, found through Retrolens.

Bullock, January and June tiles are proprietary.

Track tiles are mine and licensed with this webpage.

Polygon tiles are proprietary.

This whole shebang was developed with Jetbrains Webstorm, the GDAL (especially gdal2tiles.py and gdal_translate), QGIS, ImageMagick, GIMP and Inkscape. The original host is good old Apache.

Finally, I drew inspiration from mapsmadeasy, maptiler and especially from IITC's draw tools.