In the past there was a variety of mutually incompatible systems for displaying non-ASCII characters (IBM 437, ELOT 928, ISO 8859-7 plus a few company-specific encodings) and no standard method for typing them on a computer keyboard. This situation was resolved with the introduction of Unicode. Before the introduction of Unicode-compatible software (web servers and clients) many Greek personal or informal web sites were written in Greeklish. This is no longer the case and most (if not all) of the sites with Greek content are written in native Greek.