Stepu.7z

Uses the LZMA and LZMA2 algorithms to significantly reduce file sizes.

daemondevin/7-ZipPortable: A portable build of 7-Zip ... - GitHub Stepu.7z

If you are looking to create a "feature" (functional enhancement) for a project contained within this archive, or if you meant to ask about features for the format itself, here are the standard capabilities and ways to work with it: Common Features of 7z Archives Uses the LZMA and LZMA2 algorithms to significantly

Supports AES-256 encryption to protect your data with a password. Stepu.7z

Can be converted into an .exe file that extracts itself without needing the 7-Zip software installed.