After Stalin changed the Komintern policy to collaboration of Communists with other leftist parties, Popular Front governments formed in France and the Second Spanish Republic and Chile in the 1930s. (See Léon Blum)
The government of the former state of East Germany presented itself as a de facto Popular Front: a "National Front" of all anti-fascist parties and movements within parliament (Socialist Unity Party of Germany, Liberal Party, peasants' party, youth movement, trade unions, etc).
The Popular Front for the Liberation of Palestine preserves a self-image of multiple groupings united in a common cause of self-determination.