Globalization has enforced multilingualism as the order of the day. The multinational corporations are emerging as multilingual community, with parent functional language and subunit functional language concurrently used and recursively linked through information technology. In order to meet the growing demand for multilingualism, appropriate software has to be designed. The development of multilingual software is driven by stakeholders of multilingual software namely software engineers, computational linguists, language engineers and end users. Model for multilingual software is essential in the design process. But there are no explicit models available for multilingual software. An Architectural Reference Model for Multilingual Software (ARMMS) is designed. This reference model exhibits the expected multilingual software qualities. ARMMS is applied to develop a framework for the multilingual software development. PONN, KURAL, MAYAN and PONN SMS are some of the multilingual software designed using ARMMS.