eCosCentric website. “eCos Timeline”. 2015年7月1日閲覧。 “eCos was conceived and initially developed by Cygnus Solutions Inc., who initiated the project in February 1997.”
eCos official website. “eCos License Overview”. 2009年6月22日閲覧。 “eCos is released under a modified version of the well known GNU General Public License (GPL).”