ACDZip is the zip software you can use to zip and unzip files efficiently. While opening zip files, ACDZip lets you view thumbnails of zipped pictures. You can easily choose the files you want to unzip without having to extract the entire archive. 825
7-Zip is a file archiver with the highest compression ratio. The program supports 7z, ZIP, RAR, CAB, ARJ, CPIO, RPM, DEB, GZIP, BZIP2 and TAR formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format. 897
