: Still free and open-source, the current version (e.g., v26.01) is available at 7-zip.org .

: For emailing large files, use the "Split to volumes" feature to break a massive archive into smaller chunks (e.g., 25MB parts for Gmail). 442 extension? AI responses may include mistakes. Learn more

Released on May 14, 2006, version 4.42 was a "turning point" update for open-source compression.