MetaProViz (Metabolomics Processing, functional analysis and Visualization), a free open-source R-package that provides mechanistic hypotheses from metabolomics data by integrating prior knowledge from literature with metabolomics. MetaProViz offers an interactive framework consisting of five modules: Processing, differential analysis, prior knwoledge access and refactoring, functional analysis and visualization of both intracellular and exometabolomics (=consumption-release (CoRe) data).