Abstract. WIRIS is one of the main services offered by the Internet portal edu365 of the Education Department of the Catalan Government. Its intentional users, for both individual and group activities, are the teachers and students in the secondary and primary schools of Catalonia. Access to the site is unrestricted and only a standard Web browser is needed. WIRIS supports not only advanced symbolic, geometric, and numerical computations but also the capacity to produce Webbased mathematical content. The main goal of the present paper is to explain the functionalities of that system, but we will also consider the system's design and development, its present status, how it can be easily adapted to the requirements of other communities around the world, and its perspectives for the near future." (Introductory paragraph)