Symbolics refers to two companies: now-defunct computer manufacturer Symbolics, Inc., and a privately held company that acquired the assets of the former company and continues to sell and maintain the Open Genera Lisp system and the Macsyma computer algebra system.The symbolics.com domain was originally registered on March 15, 1985, making it the first .com-domain in the world. In August 2009, it was sold to XF.com Investments.