cql2g4 is a java library that implements the parsing of OGC CQL2(Common Query Language). It can also convert CQL2 to SQL WHERE clause

A parser for WKT geometry files (Well Know Text)

Geometry cut into small squares，LineString and Polygon are computed differently

Projections Java Library

Simple Features Well-Known Text Java Library

Well Known Geometry

Coordinate Reference Systems Java Library

Geography Geometry Operators Service using gRPC.