This volume contains a selection of 18 papers, chosen from among the 38 papers that were presented at the 2007 NooJ conference, Autonomous University of Barcelona, June 7-9, 2007.NooJ is a linguistic development environment that allows linguists to formalize a wide gamut of linguistic phenomena, and then test, adapt, share and accumulate each elementary description to build linguistic modules , i.e. structured libraries of linguistic resources.NooJ is also used as a corpus processor that can launch sophisticated queries over large corpora in order to produce various results (concordances, statistical analyses, information extraction, etc).NooJ’s linguistic engine is integrated in several research centers and software companies in order to build numerous Natural Language Processing applications.