Yes, LaTeX is free and open-source software. It is distributed under the LaTeX Project Public License (LPPL), allowing users to use, modify, and distribute LaTeX without cost. LaTeX is available for various operating systems, including Windows, macOS, and Linux. You can download and install LaTeX distributions such as TeX Live or MiKTeX at no charge, making it accessible to everyone. Additionally, numerous online resources and communities provide support and help with using LaTeX effectively.