An online writing center developed at the University of Antwerp, Belgium, called Calliope, provides a modular platform aimed at enhancing learners’ professional writing skills in five different languages: Dutch, English, French, German, and Spanish. It supports courses in business and technical communication. The current version includes modules on press releases in English, business letters in French, and minute taking in Dutch. Unlike many online writing centers, it is genre-specific and context-specific, it is highly interactive rather than linear, it uses a process approach to cater to different learning styles, it accommodates different writer profiles, and it is an instructional tool not connected to a physical writing center.