Sigmasoft Corporation is an engineering and scientific software development and marketing company. The company focuses on the development and marketing of products that have wide commercial and educational markets. These software products are unique, easy to use, powerful, fast, and compact.

Sigmasoft released its first product, entitled Atlantis for Windows, in July 1998. Atlantis is friendly Graphing/Math software for a horizontal market. Sigmasoft designed this unique product to be suitable for worldwide distribution, OEM with other software companies, bundle with computer hardware and software companies, and customization/integration for corporations. The customer-base of Atlantis includes oil companies, engineering companies, scientific companies, investment-banking companies, government agencies, universities, and high schools. The next version, Atlantis2000 for Windows, was released in January 2000. Atlantis v2.6 was released in January 2003. The fourth version, Atlantis 3.0 for Windows, is the next upcoming release.

For the growing market of Pocket Windows devices, Sigmasoft has developed Pocket Atlantis, a rich subset of Atlantis. Pocket Atlantis is a fifth generation graphing/calculation tool that follows the slide rule, the calculator, the scientific calculator, and the graphing calculator (TI, HP). Sigmasoft is the first company to offer such comprehensive, user-friendly Graphing/Math software for PDAs.