1. A method for parallel analysis of a plurality of in vitro transcription/translation reactions, said method comprising: carrying out said plurality of in vitro transcription/translation reactions in a plurality of reaction mixtures in wells of a multiwell plate to generate a plurality of reaction products, wherein each non-control reaction mixture comprises cell-free protein expression reagents and at least one nucleic acid template; spotting said plurality of reaction mixtures including reaction products onto a substrate wherein the substrate is optionally coated, wherein said reaction products bind directly to said substrate or said coated substrate, wherein said substrate comprises a membrane or a glass slide and wherein said spotting is carried out without use of a separation step that provides information about molecular weights of reaction products and without an intervening purification step; and detecting said plurality of in vitro transcription/translation reaction products bound to said substrate.