OpenLayers

OpenLayers is a JavaScript library for displaying map data in web browsers as slippy maps. It provides an API for building rich web-based geographic applications similar to Google Maps and Bing Maps.

OpenLayers

OpenLayers can communicate through several protocols
Original author(s)	MetaCarta
Developer(s)	The OpenLayers Dev Team
Initial release	June 26, 2006 (2006-06-26)
Stable release	10.5.0[1]  / 2 April 2025; 60 days ago (2 April 2025)
Repository	github.com/openlayers/openlayers
Written in	JavaScript
Platform	Web browser
Type	Web mapping
License	FreeBSD
Website	openlayers.org

It is open-source, provided under the 2-clause BSD License.^[2]

Features

OpenLayers supports GeoRSS, KML (Keyhole Markup Language), Geography Markup Language (GML), GeoJSON and map data from any source using OGC-standards as Web Map Service (WMS) or Web Feature Service (WFS).

History

The library was originally based on the Prototype JavaScript Framework.

OpenLayers was created by MetaCarta after the O'Reilly Where 2.0 conference^[3] of June 29–30, 2005,^[4] and released as open source software before the Where 2.0 conference of June 13–14, 2006, by MetaCarta Labs. Two other open-source mapping tools released by MetaCarta are FeatureServer and TileCache. Since November 2007, OpenLayers has been an Open Source Geospatial Foundation project.^[5]