7-Zip’s default archive format is recognized be the file extension “.7z”. This archiver will
- pack and compress files and directory structures
- encrypt them with 256-bit AES algorithm
- pack/unpack 7z, ZIP, gzip, bzip2, tar
- unpack CAB, RAR, ARJ, Z, LHA, cpio, smzip, JAR, ISO, rpm, deb
- open, browse and extract data from ISO images
- create multiple volumes, so you can even backup large amounts of data into convenient slices and burn them on CD/DVD
This is why we only recommend 7-Zip. It is almost complete, leaves very little to wish for, and is Open Source Software: reliable, fast, and easy to use.

