7-Zip Archiver

7-Zip is a free and open-source file archiving software. It is used to compress files to reduce their size for faster transferring on the web or physical media. 7-Zip uses its own 7z archive format, but can read and write many other archive file formats. The program can be used from a command-line interface as the command p7zip, as a graphical user interface, or with a window-based shell integration. 7-Zip began in 1999 and is developed by Igor Pavlov. 7-Zip is open-source software and most of its source code is under the GNU LGPL license. The unRAR code is under the GNU LGPL with an "unRAR restriction", which states that developers are not permitted to use the code to reverse-engineer the RAR compression algorithm.
7-Zip has following main features:

High compression ratio in 7z format with LZMA and LZMA2 compression
Supported formats:
Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR and Z.
For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip
Strong AES-256 encryption in 7z and ZIP formats
Self-extracting capability for 7z format (.exe)
Password protected archiving
Integration with Windows Shell
Powerful File Manager
Powerful command line version
Plugin for FAR Manager
Localizations for 87 languages

7-Zip works in Windows 10 / 8 / 7 / Vista / XP / 2012 / 2008 / 2003 / 2000 / NT. There is a port of the command line version to Linux/Unix.

It compress more and better than any paid software in the market. It will be true to said it the Must Have archiving software for computers.

× Tip! Archiving a file via 7-Zip can reduce its size. This will take less time to transfer from one location to another. Like upload on the web, move to removable media e.t.c.

Downlaod 7-Zip here