Writing applications for digesting web information is a rather complex task. In order to let programmers easily build web-based applications we have developed a general purpose data-flow visual programming environment that can be effectively used to find, collect and manipulate information available on the web. The system was originally devised to help the user to develop applications in a totally controlled manner. However, the VIPERS environment, thanks to its modularity and its flexibility, allows the easy integration of software modules that can even be characterized by autonomous intelligent behavior, thus allowing simple implementation of agent-based web applications. We therefore propose our system as a useful platform for rapid prototyping and experimenting with software agents.
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