Rent Right Software
This popular Windows based software works as well for landlords with a few rental units as it does for management of extensive properties.
http://www.rent-right.com/

Rent Manager
Rent Manager is a Residential and Commercial Property Management Solution designed specifically to help today's Real Estate professionals work more efficiently and effectively.
http://www.rentmanager.com/

Terrabrook
Mixed-use community developer owns, develops and manages residential properties throughout the US and Puerto Rico. Includes properties, news, and builder programs.
http://www.terrabrook.com/

W&M Properties Online
Owners and managers of commercial, retail, and residential properties across the nation. Features properties, investments, investor opportunities, and leasing.
http://www.wmproperties.com/

All Property Management
Guide to Property Management Companies
http://www.allpropertymanagement.com

Thomas J. Klutznick Company
Privately held real estate investment, development and consulting firm. Includes properties, services, investor information. Headquarters in Chicago with regional office in Denver.
http://tjkcompany.com/

Taylor Management
Taylor Management provides unique financial and property management solutions for condominium associations, townhome associations, homeowner associations and other property owners. Our process of developing a customized solution based on your specific nee
http://www.taylormanagementusa.com/