The goal of UsabEU is to provide a starting point for usability evaluations with questionnaires in native or mother tongue. The platform supports online collaborative translation of usability questionnaires and their validation. Additionally, it serves as a repository for all validated questionnaires and a tool to perform statistically sound usability evaluations. The current proof-of-concept platform supports the translation and validation of the System Usability Scale questionnaire and statistical assistance for sample size estimation and data summarization.