Marange, 27, made almost 100 appearances for Ligue 1 outfit Bordeaux and had loan spells at Le Havre and Nancy.
He joins fellow French speakers, Congolese midfielder Elliot Grandin and Moroccan Marouane Chamakh at Selhurst Park.
He could be in line to make his debut in Palace's opening match of the season at home to Tottenham Hotspur on Sunday.
(Reporting By Tony Goodson)
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