Modern7z is a plugin for the popular 7-Zip archiver. It adds support for the following leading-edge compression methods:

• Zstandard v1.3.5
• Brotli v1.0.4
• LZ4 v1.8.2
• LZ5 v1.5
• Lizard v1.0
• Fast LZMA2 v0.9.2

Each of these compression methods can only pack a single file. Multiple files are usually pre-packed into a container like TAR, and then it is compressed with the method. You can also use any of these compression methods as a codec when packing files into a .7z file.