fdply                   Read some chunks from a file into a
                        'data.table'
ffply                   Read, process each block and write the result
flply                   Read, process each block and return a list
fmply                   Read, process and write to multiple output
                        files
fplyr                   fplyr: Read, Process and Write
ftply                   Read, process each block and return a
                        data.table
