Fredrik Gustaf Otto Ruben

3L System AB develops and markets software and information technology services. It focuses on professional business, media business, and core business systems. The company was founded in 1976 and is headquartered in Stockholm, Sweden.

Tobii Dynavox LLC manufactures hearing machines for disabled people. It provides touch and eye tracking based assistive technology hardware and software for those with communication and mobility challenges. The firm offers T7, EyeR, M-8, EyeMobile, PCEye Explore and PCEye Go devices. The company was founded in 1983 and is headquartered in Pittsburgh, PA.

Tobii Technology Norge AS develops and sells software and information technology equipment and related goods and services. The firm produces, imports, and exports software and hardware. The company was founded on March 5, 1984 and is headquartered in Bergen, Norway.

Eye Response Technologies, Inc. develops eye-tracking technology solutions. The company was founded on August 6, 1993 and is headquartered in Pittsburgh, PA.

Part of Vitec Software Group AB, Vitec Mäklarsystem AB is a software company based in Gothenburg, Sweden. The Swedish company develops software solutions for the property management sector. Vitec Mäklarsystem AB was acquired by Vitec Software Group AB on December 18, 2007.