Igor Pavlov released the official console version of 7-zip for Linux along with the release of version 21.01 for Windows due to the fact that the p7zip project hasn't seen updates for five years. The official version of 7-zip for Linux It is similar to p7zip, but is not a copy. Differences between the projects are not disclosed. The program is released in versions for x86, x86-64, ARM, and ARM64. The 7-Zip code license is for Linux — GNU LGPL.
Besides porting for Linux Among the improvements in 7-zip 21.01 is increased performance on ARM64 hardware due to the use of specialized CPU instructions to speed up AES, CRC-32, SHA-1, and SHA-256 calculations.
Source: opennet.ru
