leaflet_helper 0.7.7.0
For those of us who don't want to get our hands dirty writing JavaScript (shutter) this library is for you. Actually, its for me, but you can use it if you like. It is a Ruby-wrapper around some basic leaflet.js functions. It uses either Open Street Map or your account on mapbox.com. It handles markers on maps and the clustering of those markers. It supports multiple maps per web page.