MathWorks does not offer free downloads of full MATLAB versions, and sites promising free access often distribute unauthorized or malicious files. Users can securely access MATLAB through a free browser-based version, a 30-day trial, or institutional licenses, rather than seeking unofficial, potentially harmful, downloads. For secure access, visit the MathWorks Downloads Directory to download authorized software, including historical releases like R2021a. MATLAB Online Versions - MathWorks
