One of the oldest MT systems is SYSTRAN, which was developed as a rule-based system beginning in the 1960s, and has been extensively used by US and European government agencies, and also in Yahoo! Babel Fish and (until 2007) in Google Translate.  In 2010, it was hybridized with statistical MT techniques. As mentioned, Google Translate currently uses phrase-based MT, with English serving as an interlingua for the majority of language pairs. Microsoft's Bing Translator employs dependency structure analysis together with statistical MT. Other very comprehensive translation systems include Asia Online and WorldLingo. Many systems for small language groups exist as well, for instance for translating between Punjabi and Hindi (the Direct MT system), or between a few European languages (e.g., OpenLogos, IdiomaX, and GramTrans).