MassPred is a set of tools that provides easy predictor installation, application of predictors to input data and filtering of the results of predictor action. MassPred takes the contents of input files or directories, extracts every single protein and applies the desired predictors to the extracted proteins, creating separate jobs that can be simultaneously executed on a symmetric multiprocessor computer, or on computers with a multicore/multithread processor architecture. MassPred itself does not perform a parallel execution of a single predictor application to a single protein.