1)   JExcel 1.0
JExcel is a library for integrating Microsoft Excel into Swing applications and for working with Excel workbooks and worksheets from Java programs.

 2)   JNIWrapper 3.6.1
JNIWrapper eliminates difficulties in working with native code from Java programs using a standard JNI approach. With JNIWrapper, there is no need to create native libraries to call a function of the operating system API or a function from a library.

 3)   JExplorer 1.7
JExplorer is a library that provides developers with an ability to integrate Microsoft Internet Explorer into Swing applications.

 4)   ComfyJ 2.3
ComfyJ is a COM-to-Java-to-COM bridge. ComfyJ allows a Java application to easily integrate with any COM/OLE/OCX/ActiveX libraries and to expose Java objects as COM objects. And all this is possible in pure Java language without writing native code.