Standard¶
http://www.opengeospatial.org/
The GeoJSON Format: https://tools.ietf.org/html/rfc7946
DB¶
PostGIS for PostgreSQL¶
http://postgis.refractions.net/
GeoCouch for CouchDB¶
https://github.com/couchbase/geocouch/
GeoIP2¶
https://dev.maxmind.com/geoip/geoip2/downloadable/
Solr¶
https://wiki.apache.org/solr/SpatialSearch
AMAQ¶
https://lbs.amap.com/faq/top/notice/flowlevel
Tencent¶
http://lbs.qq.com/webservice_v1/guide-search.html
http://lbs.qq.com/webservice_v1/guide-suggestion.html