The following lists the name of each additive system manufacturer, followed by the country in which the company was started, the year it was founded, and the year its first technology was introduced commercially. 

3D Systems	US	1986	1988
Aaroflex	US	1994	1996
AeroMet	US	1997
Autostrade	Japan		1996
Beijing Yinhau Laser Rapid Prototypes	China		1998
BPM Technology	US	1989	1995
BMT	Germany		2001
CMET	Japan	1988	1990
Cubic Technologies	US	2000	2001
Cubital	Israel	1987	1991
Denken Eng. Co., Ltd.	Japan	1985	1993
D-MEC	Japan	1989	1989
DTM	US	1987	1992
DuPont SOMOS	US	1989	n/a
EOS	Germany	1989	1990
Fockele & Schwarze	Germany	1991	1994
Helisys	US	1985	1991
Kinergy	Singapore		1996
Kira Corp.	Japan	1992	1994
Light Sculpting	US	1986	n/a
Meiko Corp.	Japan	1991	1994
Mitsui Zosen Corp.	Japan	1991	1991
Objet Geometries	Israel	1998	2001
Optomec	US		1998
Precision Optical Manufacturing (POM)	US
ProMetal	US	1996	1999
Quadrax	US	1990	1990
Röders	Germany		1999
Sanders Design International	US		2000
Schroff Development	US		1996
Solidica	US		2001
Solidimension	Israel
Solidscape	US	1994	1994
Soligen	US	1991	1993
Sparx AB	Sweden		1991
Stratasys	US	1988	1991
Teijin Seiki	Japan	1991	1992
Toyoda Machine Works	Japan		2000
Ushio Inc.	Japan		1994

Source: Wohlers Associates

Note: Nova Automation, known later as DTM, was founded on December 1, 1987. Solidscape was formerly called Sanders Prototype. Quadrax developed and sold the Mark 1000 stereolithography system until February 1992 when its technology was acquired by 3D Systems after patent litigation that began in September 1990. Teijin Seiki and Aaroflex have licensed their stereolithography technology offerings from DuPont. Soligen sold machines commercially for a relatively short period of time. AeroMet and POM have not yet begun to sell machines commercially.