7-Zip is a free software distributed under the GNU/LPGL protocol. It can be said that it is currently the most promising file compression format to become the next mainstream compression format after zip and rar. The compression rate of 7zip is its biggest competitive advantage. When choosing the normal compression rate, we can easily beat the highest compression rate of winrar. But 7zip is not perfect (if it were perfect, RAR would have been replaced). The main reason is that the software interface is still not good enough, and the format itself does not support volume compression well, but this does not prevent 7zip from becoming the most potential compression format.
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