The Montage is a standalone instrument, but free libraries require a host.
Downloading a library is only step one. To truly embrace the "Lifestyle" aspect of music creation, you need to organize your digital workspace.
If your goal is a lifestyle and entertainment setup—music production, content creation, home jamming—here are real, legal, and high-quality alternatives:
Since you cannot legally download a Montage library for Kontakt, the best strategy is to combine high-quality free libraries that cover the Montage’s main strengths: Pianos, Pads, and FM Synthesis.