In this paper, a framework for mobile context-based messaging applications is presented. The framework provides a way to create messaging applications easily and efficiently by allowing applications to be defined via XML documents. The application framework was implemented using Java programming language. It supports applications that have different categories from which users can search messages based on different context and content criteria and to which users can send messages containing any multimedia elements. Currently supported context criteria are location and time, and the only currently supported content criterion is the words contained in the messages. Possible applications include reporting and discussing problems of public spaces, rating public services, and selling second-hand products. The main benefit for the users is that it is easy to switch between applications that use the same framework since the applications share a similar look and feel.
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