OpenLayers is a Javascript library that can display map tiles and markers loaded from any source in web browser. It provides an API for building rich web-based geographic applications. OpenLayers makes it easy to put a dynamic map in any web page. It can display map tiles, vector data and markers loaded from any source. OpenLayers has been developed to further the use of geographic information of all kinds. It is completely free, Open Source JavaScript, released under the 2-clause BSD License (also known as the FreeBSD).
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OpenLayers was used in this research abstract available in XML format https://raw.githubusercontent.com/lehkost/ToolXtractor/master/data/xml/2019/CHUANG_Tyng_Ruey_Maps_Re_imagined__Digital__Informational__a.xml