OWL API最新版本3.1，2010年8月20日发布，支持对OBO本体的分析。-The OWL API is a Java API and reference implmentation for creating, manipulating and serialising OWL Ontologies. The latest version of the API is focused towards OWL 2

owlapi代码，专门针对OWL格式本体进行各种操作。-owlapi code format specifically for OWL ontologies for various operations.