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Open source routing engine for OpenStreetMap. Use it as Java library or standalone web server.

A Graph Traversal Language (no longer active - see Apache TinkerPop)

The DP3T-App for Android

Generic Hearthstone game simulator

Schema validation and conversion based on RELAX NG

Programmer De-anonymization via Code Stylometry

(RETIRED) MIL-STD-2525 B and C rendering library and web service

Java Implementation of EXI

Ortelium is a tool for generating military map symbols.

Comparison between MongoDB, MySQL, Cassandra and PostgreSQL