Short for Real Estate Maximums, RE/MAX has been in operation since 1973. In its 43 years of existence, the company has grown to encompass more than 100,000 sales agents working in franchise-owned and operated offices in more than 100 countries and territories. More importantly, RE/MAX is regarded as one of the countryâs most productive real estate sales forces. A real estate powerhouse in its own right â and one of the industryâs most recognized brands â Century 21 boasts a global operation throughout Europe, Latin America, the Middle East and Asia. There are approximately 7,000 independently owned, operated broker offices, with 100,000 associates spread out around the world. Century 21 has established itself as a leader in e-marketing and has emerged as one of the most respected brands in the industry.