Bwmi8.7z [UPDATED]
Often achieves 30-70% better compression than ZIP and 2-10% better than many other formats.
Can use multiple CPU cores simultaneously to speed up the compression process. Comparisons Compression Ratio High (LZMA/LZMA2) Moderate (Deflate) Encryption AES-256 (Strong) Standard (Often weaker) Compatibility Needs 7-Zip or WinZip Native in most OS Open Source Yes (GNU LGPL) Yes (Public Domain) BWMi8.7z
Provides high-level security by encrypting both the data and the filenames , preventing unauthorized users from seeing what is inside the archive without a password. Often achieves 30-70% better compression than ZIP and
7-Zip is free software with open source. The most of the code is under the GNU LGPL license. Does 7z compress better than zip? - Microsoft Community Hub BWMi8.7z