I often have to send a lot of files - without archives you can’t go far when you have to transfer many files at once. I have been using the zip-archiver built into Windows for several years to create archives, since zip opens today everywhere without installing additional software. However, there are such incidents that my customers send archives to rar and demand to answer archives in the same formats. Here, it would seem, any rar program like winrar can come to the rescue, but recently it did not cope with some of the files that I received the other day. I also tried to open via paid - 8zip, which is able to open many archive formats, but nothing happened. What do you recommend to use from the software? I would like to have a program for such cases of life, so as not to force customers to wait and not be nervous themselves.