Loid is used to work with Java and Objective-C to simplify data exchange bindings. Loid can generate meta-information available at run-time. Requesting clients or applications can inference on the meta-information for data binding.
Glue 2 is a Semantic Web Service discovery engine fully compatible with the WSMO meta-model and the WSML language that aims at solving polarization problems by using mediators.
Java Meta Weblog API (jMwa) is a Java util library and implementation of the MetaWeblog API. For example it allows to post to a weblog (that supports XML-RPC and the MetaWeblog API).