What is the difference of the writings and theories of these three men: Karl Marx, Max Weber, and Emile Durkheim?

With his writings, Marx sought to call for worldwide revolution against capitalism. Weber defended capitalism and argued that its rise is explained by Protestant Christianity. Durkheim is often considered the most important founder of sociology.
Marx argued that history is ultimately driven by economics: economy is the structure, culture only the superstructure or facade. This is called a materialist view, and part of it is the distrust of religion inherent in Marxism and later Communism. Marx argued that capitalism would destroy itself and that a conscious working class could seize the means of production and bring about a workers' paradise.
Weber argued that capitalism is inherently good. He claimed it arose because of what has since been termed the Protestant Work Ethic. Weber is thus strongly against Marx's materialist view, arguing that culture (Protestantism) preceded economics and created it. What Weber ignored, though, was that capitalism was created by the wealth stolen from the Americas. He also failed to note that the hardest workers in capitalist societies are usually not the wealthiest.
Durkheim was concerned with how societies remain strong when they are undergoing rapid change and stress. He was a functionalist, one who saw societies as having parts that needed to work together, espousing a different view from both Marx and Weber. He had little concern with promoting or defending either capitalism or communism. His founding of the discipline of sociology instead led to the use of government as a form of social engineering to strengthen societies.