Google maps for block game
Hibernate's core object/relational mapping functionality
Traccar GPS Tracking System
Lightweight GPS Logging Application For Android
GeoServer repository
An open source geocoder for openstreetmap data
Mybatis common mapper, easy to use
Toolkit for working with and mapping geospatial data
Geographic library
Open source cross-platform Java Visual Traceroute
Viking is a free/open source program to manage GPS data
Showing The Amateur radio Repeaters Tool
GPS track editor for editing tracks and planning (multiple) day tours
NMEA 0183 library for Java
Navigational Algorithms - Marine navigation
Set of Java interfaces for geospatial applications