OGTE has been developed by EFL Technologies as a free resource for teachers and others wishing to write graded texts. Extensive Reading Central is a not-for-profit organization dedicated to developing an Extensive Reading and Extensive Listening approach to foreign and second language learning. It was started by Dr. Rob Waring of Note Dame Seishin University, Okayama, Japan and Dr. Charles Browne of Meiji Gakuin University, Tokyo, Japan as a free service to the EFL community.
You can read more about us here.