RSoft develops electronic component design and business analysis software to the telecommunications, semiconductor, and electronics industries, which its clients use for product development and network engineering. The company's applications are used in the design phase to plan and simulate electronic devices and components used in fiber optic networks (BeamPROP, FullWAVE, and ModePROP), as well as to simulate connections in communications networks to evaluate system performance (ModeSYS, MetroWAND, and Artifex). Outside of the US RSoft makes sales through distributors in Asia, Europe, the Middle East, and South America. RSoft has international offices in Tokyo and the UK. It was acquired in 2012 by Synopsys.