In this paper we present a SOAP extension for protecting the privacy of users of a Web service. This extension allows a user to prove to a remote SOAP server to be member of a trusted group without revealing his/her identity. Our extension has been designed as to ensure interoperability among SOAP applications written in different programming languages. We developed also some implementations of our extension using different programming languages. Moreover, we conducted an extensive experimentation of our implementation to prove its feasibility in a real-world context. In sums, our work suggests that privacy can be added to Web services with very little impact on the application developer and without compromising the performance of Web services.

JIVE (Java interactive software visualization environment) is a system for the visualization of Java coded algorithms and data structures. It supports the rapid development of interactive animations through the adoption of an object oriented approach. JIVE introduces several significant innovations such as a distributed architecture able to separate transparently the visualization activity from the underlying communication needed to support it. Therefore, it becomes possible to use JIVE in a variety of scenarios ranging from debugging algorithms to software visualization in virtual classrooms environments. Moreover, JIVE uses a zoomable user interface for representing algorithms: seamless visualization of both small and large data sets is achieved by using semantic zooming. Finally, JIVE comes with a collection of already animated data types including data structures provided by the Java standard library