As for the supported compression formats, we can create RAR, RAR4 and ZIP files. In addition, to offer versions of 32 and 64 bits. We continue to analyze the compatibility between WinRAR vs 7Zip, WinRAR available for Mac, FreeBSD, Linux, and OS / 2 operating systems.
The exception to this is business use, in this case you should obtain a WinRar license to avoid legal problems.
The main difference is that 7-Zip is distributed under a GNU LGPL license, which means that it will always be free and open source. As for 7Zip, it is a bit more recent software, since it was created in 1999 by the programmer Igor Pavlov.