7-Zip is a file archiver with a high compression ratio. It is a free software for Windows to archive files in different formats and manage them. can compress any large file to make it smaller. It saves disk space and also makes it easier to transfer the file over the internet. Download 7-Zip (32-bit) for Windows to archive and unpack files on your 32-bit computer. You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip.