WSC (Web Service Connector) is a wsdl2java library from Salesforce which makes it easier to interact with Salesforce using various APIs (viz Partner, Apex, Metadata) etc. General workflow is to download the wsc jar, invoke the wsdlc compiler for a given wsdl, which generates the jar file. Then if you are using Maven, then install the generated jar into Maven local repository or your enterprise repository. Doing this for all the wsdls rather tedious and laborious.
I came across this situation and thought about automating the process and the result is force-wsdl2jar. It is maven project which generates the required jars and installs to local Maven repository.
Give it a try and let me know what you think.