Phonopy is an open source package for phonon calculations at harmonic and quasi-harmonic levels.
Phono3py is another open source package for phonon-phonon interaction and lattice thermal conductivity calculations. See the document at http://atztogo.github.io/phono3py/
Phonon database: A collection of first principles phonon calculations is available as open data at http://phonondb.mtl.kyoto-u.ac.jp/ , where the raw data of phonopy & VASP results are downloaded.
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New BSD from version 1.3.
(LGPL from ver. 0.9.3 to version 1.2.1., GPL to version 0.9.2.)