RAR and ZIP are two formats that are different. LZ77, which replaces duplicate strings with pointers to the previous incident is used by both. However, RAR generally compresses better (at the price of more memory) by using a bigger sliding window therefore it is capable to point to older references
The chief purpose of both applications will be to put many files, or an entire “tree” of folders and files, into an individual file for more convenient handling. (And take them outside again afterwards. )
It’s generally easier to give a single file that includes everything than an enormous group of files that are different to someone. As well, both applications generally “compress” the files to make them take up less disk space
In earlier times when bandwidth and discs were smaller, this compression was a characteristic that is principal – now it’s typically somewhat less significant as the group function.
Until you particularly need a characteristic that is supported in only one of them (there aren’t many such), which one to use is a personal decision – you might discover one to be easier or more suitable in relation to the other
RAR is proprietary although another difference is that ZIP is an open format. ZIP compressors are open and free source. The RAR decompressor (unrar) is free, but the compressor isn’t.
They both can enlarge both. ZIP and. RAR files (and other formats), but WinRAR can compact files in either format whereas WinZip can just streamlined files in the ZIP format.