Check out Esri's Javascript API, the 4.0 Beta supports 3d geometries. Though not sure about displaying an indoor map. Main page: https://developers.arcgis.com/

Check out Esri's Javascript API, the 4.0 Beta supports 3d geometries. Though not sure about displaying an indoor map. Main page: https://developers.arcgis.com/javascript/beta/ https://developers.arcgis.com/javascript/beta/ Sample: http://developers.arcgis.com/javascript/beta/sample-code/sandbox/sandbox.html?sample=sample-code/source-code/3d/scene-layer/index.html http://developers.arcgis.com/javascript/beta/sample-code/san... There is also the CityEngine Web Viewer, though not really a library: http://www.arcgis.com/apps/CEWebViewer/viewer.html?3dWebScene=9c0e319bfaff4d33a0fe2da97c2c3fd7 http://www.arcgis.com/apps/CEWebViewer/viewer.html?3dWebScen...