The advantage of green software is that it does not pollute the operating system (probably this is also where the name "green" comes from), no installation is required, it's easy to uninstall, portable, and can be copied onto a portable USB drive for running anywhere. For most people who are not tech-savvy, this type of software is essential; for more reasons, please refer to the introduction of high-quality green portable software.
For portable versions of software, first and foremost, they are purely green, meaning they make no changes to the system or only minimal changes, including to the registry and file system, which is a common feature shared with green software. Another point is that the software's configuration can...