OpenLayers vs. OpenStreetMap
Take a look at this side-by-side comparison of OpenLayers and OpenStreetMap.
At a Glance
OpenLayers
About OpenLayers
OpenLayers is an open-source JavaScript library for displaying map data in web browser.
OpenStreetMap
About OpenStreetMap
OpenStreetMap is a free, editable map of the whole world that is being built by volunteers largely from scratch and released with an open-content license.