Some of Eugen Gruber's notable works include:
Plays:
* Der Kampf um den Frieden (The Fight for Peace)
* Die rote Fahne (The Red Flag)
* Die schwarze Hand (The Black Hand)
* Die weiße Rose (The White Rose)
Novels:
* Die Arbeiter von Wien (The Workers of Vienna)
* Die Bauern von Tirol (The Peasants of Tyrol)
* Die Bürger von Salzburg (The Citizens of Salzburg)
Short stories:
* Die Glocken von Sankt Stephan (The Bells of St. Stephen's Cathedral)
* Der Prater (The Prater)
* Die Donau (The Danube)
Essays and articles:
* Die Zukunft der Arbeiterklasse (The Future of the Working Class)
* Die Krise des Kapitalismus (The Crisis of Capitalism)
* Der Faschismus (Fascism)
Gruber's works are characterized by their social and political themes, as well as their strong narrative and lyrical qualities. He is considered one of the most important Austrian writers of the early 20th century.