Numerous activists and libertarian people contributed to the paper, including Jean Grave, Bernard Lazare, Albert Libertad, Octave Mirbeau, Saint-Pol-Roux, Tristan Bernard, Georges Darien, Lucien Descaves, Sébastien Faure, Félix Fénéon, Émile Henry, Camille Mauclair, Émile Verhaeren, and Adolphe Tabarant. When Ravachol was arrested, Zo d'Axa proposed his help to the family and was also arrested. The paper was targeted by the trial of the thirty, a show trial of anarchists in France in 1894.
In 1922, the second EnDehors was published by Émile Armand, whose real name was Ernest Juin. Armand promoted individual freedom, feminism (Emma Goldman) free love and anarchism. Because of World War II the publication of the En-Dehors was stopped in October 1939.
In 2002, as an anarchist, Libertad organized a new version of the EnDehors, collaborating with Green Anarchy and including several contributors, such as Lawrence Jarach, Patrick Mignard, Thierry Lodé, Ron Sakolsky, and Thomas Slut. Numerous articles about capitalism, human rights, free love and social fights were published. The EnDehors continues now as a website, EnDehors.org.