7z is a free, open archive and compressed file format. The development of the format began back in 1999. A compressed archive of the 7z format is created using the special 7-Zip file compression utility, which was created by the programmer Igor Pavlov. This free file archiver has a significant ability to compress data, which makes 7z format files quite popular. Moreover, the size of the archive is practically not limited by anything. Archives in this format can be multi-volume and self-extracting. You can use the encryption option.
ZIP is one of the most popular and common archive or compressed file formats. The full name is Zipped File and the original name is Compressed ZIP archive file. The ZIP extension, which is used to package or compress files, was developed back in 1989. Its creator was Phil Katz, founder of PKWARE Corporation. Initially, the format was used in the PKZIP program, but now there are many other utilities to work with ZIP files. The ZIP format uses a standard compression type for compression, in which all individual files in the archive are compressed separately.