GeoWave provides geospatial and temporal indexing on top of Accumulo, HBase, BigTable, Cassandra, Kudu, Redis, RocksDB, and DynamoDB.
APACHE-2.0 License
Java client library for Google Maps API Web Services
Spring Boot support for Apache Geode and VMware GemFire
The JTS Topology Suite is a Java library for creating and manipulating vector geometry.
An easy-to-implement library for the GeoHash algorithm
Official GeoTools repository
Redlink Geocoding Library