# Systems - Versions and Licenses

System | Version | License
--- | --- | ---
Xerces | 2.7.1 | Apache 2 License
ICU4J | 3.4 | IBM X License
JUnit | 3.8.1 | Common Public License Version 1.0
Lucene | 2.3.1 | Apache 2 License
ANTLR | 2.7.5 | BSD-style license: ANTLR License page
Jakarta Commons Logging | 1.1.1 | Apache 2 License
Log4j | 1.2.12 | Apache 2 License
util.concurrent | 1.3.2 | Public Domain
WoodSToX StAX parser | StAX API 1.0 / Impl 3.0.0 | Apache 2 License
JSON Java library |  | JSON License
Jena IRI library | 0.5 | Jena License

A local copy of the Apache 2 License is provided.

A local copy of the IBM X License is provided.