ECos
↑ 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).”
↑ Larmour, Jonathan (2005年5月). “How eCos can be shrunk to fit” (PDF). Embedded Systems Europe: pp. 34. http://i.cmpnet.com/embedded/europe/esemay05/esemay05p32.pdf
↑ 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.