Turf

GIS for web maps – MIT licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/turf/v2.0.2/turf.min.js'></script>

mapbox-directions.js

Draw and drive routes with the Mapbox Directions API – BSD licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/mapbox-directions.js/v0.4.0/mapbox.directions.js'></script>
<link href='https://api.mapbox.com/mapbox.js/plugins/mapbox-directions.js/v0.4.0/mapbox.directions.css' rel='stylesheet' type='text/css' />

Leaflet Zoomslider

Adds a vertical slider that allows for greater control when picking a zoom level. – BSD licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-zoomslider/v0.7.0/L.Control.Zoomslider.js'></script>
<link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-zoomslider/v0.7.0/L.Control.Zoomslider.css' rel='stylesheet' />

Leaflet PIP

Supports point-in-polygon queries – BSD licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-pip/v0.1.0/leaflet-pip.min.js'></script>

Leaflet OSM

A convenient way of rendering tiles and vector data from OpenStreetMap.org. – BSD licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-osm/v0.1.0/leaflet-osm.js'></script>

Leaflet Omnivore

Loads and parses KML, CSV, GPX, GeoJSON, and TopoJSON formats – BSD licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-omnivore/v0.2.0/leaflet-omnivore.min.js'></script>

Leaflet MiniMap

Provides an small overview map that gives context for the current map view – BSD licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-minimap/v1.0.0/Control.MiniMap.js'></script>
<link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-minimap/v1.0.0/Control.MiniMap.css' rel='stylesheet' />

Leaflet Markercluster

Groups nearby markers into clusters to unclutter the map. Clicking a cluster reveals all the markers in that area. – MIT licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-markercluster/v1.0.0/leaflet.markercluster.js'></script>
<link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-markercluster/v1.0.0/MarkerCluster.css' rel='stylesheet' />
<link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-markercluster/v1.0.0/MarkerCluster.Default.css' rel='stylesheet' />

Leaflet Locate

Adds a button to your map that finds the user's location using the HTML5 Geolocation API. – MIT licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-locatecontrol/v0.43.0/L.Control.Locate.min.js'></script>
<link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-locatecontrol/v0.43.0/L.Control.Locate.mapbox.css' rel='stylesheet' />
<!--[if lt IE 9]>
  <link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-locatecontrol/v0.43.0/L.Control.Locate.ie.css' rel='stylesheet' />
<![endif]-->
<link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-locatecontrol/v0.43.0/css/font-awesome.min.css' rel='stylesheet' />

Leaflet Image

Export images out of Leaflet maps without a server component. – BSD 2-Clause licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-image/v0.0.4/leaflet-image.js'></script>

Leaflet Heat

Creates a heatmap visualization from a set of points. – BSD licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-heat/v0.1.3/leaflet-heat.js'></script>

Leaflet Hash

Adds information to the URL in your browser that makes it easy to link to specific map views. – BSD licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-hash/v0.2.1/leaflet-hash.js'></script>

Leaflet Geodesy

Supports drawing geodesic circles and measuring real area of vectors – BSD licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-geodesy/v0.1.0/leaflet-geodesy.js'></script>

Leaflet Fullscreen

Adds a button to your map that enables it to fill the screen using the HTML5 Fullscreen API. – ISC licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-fullscreen/v1.0.1/Leaflet.fullscreen.min.js'></script>
<link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-fullscreen/v1.0.1/leaflet.fullscreen.css' rel='stylesheet' />

Leaflet Draw

Adds a toolbar that allows users to draw points, lines, and polygons on the map. – BSD licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-draw/v0.4.10/leaflet.draw.js'></script>
<link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-draw/v0.4.10/leaflet.draw.css' rel='stylesheet' />

geojson-extent

Calculate the bounding box of a GeoJSON object – ISC licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/geojson-extent/v0.0.1/geojson-extent.js'></script>

geo-viewport

Transforms a bounding box into a zoom and centerpoint combination, useful for combination with our Static Maps web service – ISC licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/geo-viewport/v0.1.1/geo-viewport.js'></script>

Arc.js

Draw great circles and geographical arcs – BSD licensed.

<script src='https://api.mapbox.com/mapbox.js/plugins/arc.js/v0.1.0/arc.js'></script>