However, he also wrote several other important works, including:
* "The Condition of the Working Class in England" (1845): A groundbreaking analysis of the social and economic conditions of the working class in Victorian England.
* "Anti-Dühring" (1878): A critique of the views of Eugen Dühring, a German philosopher who Engels saw as a rival to Marx's ideas.
* "The Origin of the Family, Private Property and the State" (1884): A study of the historical development of the family, property, and the state.
* "Ludwig Feuerbach and the End of Classical German Philosophy" (1888): An analysis of the work of the German philosopher Ludwig Feuerbach.
Engels also contributed significantly to other works, including editing and publishing Marx's "Capital" after Marx's death.