Twin Sun was established in 1989 as a Japanese funded consulting and R&D firm specializing in network and groupware technologies. The company also licensed and localized US-based software for the Japanese market. Twin Sun's database and groupware products were sold through partnerships with Japanese workstation vendors such as Japan IBM, Nihon Sun Microsystems, Japan DEC, NEC, and Hitachi. In the early 1990s, Twin Sun internationalized significant software applications, such as Borland's Interbase and Ashton-Tate's dBase IV.

From the mid-1990s, Twin Sun increasingly combined its Internet-oriented expertise with its proven experience as a solution provider in Japan, Korea and China. For instance, in cooperation with its direct marketing partner, in 1994 Twin Sun developed and deployed the first Internet-based sales automation and home shopping network in Japan. Since 1996 Twin Sun has also participated in major engagements with companies such as Bandai in developing state-of-the-art Internet-based entertainment networks in Japan and the US.

Since 1998, Twin Sun has increasingly focused on harnessing its marketing and technical abilities for the development joint-venture relationships with emerging Internet firms. Twin Sun is one of a handful of companies dedicated to bringing Internet firms and technologies to the Asia-Pacific markets.