Leaflet ndi laibulale yotsegula ya JavaScript yomwe imagwiritsidwa ntchito popanga mapu a intaneti. Yoyamba kutulutsidwa mu 2011, imathandizira nsanja zambiri zam'manja ndi pakompyuta, zothandizira HTML5 ndi CSS3. Pakati pa ogwiritsa ntchito ndi FourSquare, Pinterest ndi Flickr. Leaflet imalola omanga omwe alibe maziko a GIS kuti awonetse mosavuta mamapu okhala ndi matailosi omwe ali pa seva ya anthu onse, okhala ndi zokutira zomata. Itha kutsitsa zomwe zili pamafayilo a GeoJSON, kuyisintha ndikupanga magawo olumikizana, monga zolembera zokhala ndi ma popup mukadina.