Netty project - an event-driven asynchronous network application framework

Server supporting the Signal Private Messenger applications on Android, Desktop, and iOS

Full-featured Socket.IO Client Library for Java, which is compatible with Socket.IO v1.0 and later.

Official GeoTools repository

c:geo - The powerful Android geocaching app.

Framework for building Event-Driven Microservices

The NASA WorldWind Java SDK (WWJ) is for building cross-platform 3D geospatial desktop applications in Java.

Because not all paparazzis are evil!

A geometry model that conforms to the OGC Simple Features for SQL specification.

🔬 Memory-Efficient Immutable HashMap/HashSet

UnifiedNlp geocoder backend that uses the OSM Nominatim service

JTS Topology Suite