The PROMAS Landlord Software Center (CMS, Inc.) was established in 1984 and is the developer of a number of specialized vertical market software products.

PROMAS Property Management Accounting Software is a family of property management software products for professional property managers, association management companies and self-managed associations. Integrated accounting and management reporting functions form the backbone of a feature-rich, affordable, easy-to-use property management software product line. Right now there are over 2800 companies currently using the PROMAS software for their rental management and association management requirements.