Dator Inc. Dator Inc. is a computer and networking company that has been on the market since 1987. Since 2001, Dator Inc. has focused on software development to meet the needs of recreational and tourism organizations. This is how the SiS software was born. For more than 10 years, Dator Inc.'s team of programmers has been working on a daily basis to develop and refine reliable, secure and state-of-the-art tools. Scalable, easy-to-use and high-performance, SiS management software enables customers to manage their entire business intelligently!