The Graphic Online Language Diagnostic (“GOLD”) is a corpus tool that allows language educators to submit and analyze language data. GOLD was developed by the Center for Advanced Language Proficiency Education and Research (“CALPER”) at The Pennsylvania State University (“PSU”), University Park, PA, USA under a grant from the U.S. Department of Education (Title VI, P229A060003 and P229A020010).
Link here: http://gold.gwserver1.net