Winrar is a free application which offers us the possibility to compress and unpack any file in a very easy and comfortable way and it doesn't take a long time to do it. The program integrates itself perfectly in the right-button menu, so you will be able to create RAR and ZIP files with no problems, just right-clicking the file -or group of files- and select the 'Add to archive' option.
No matter the format of the compressed file, you'll be able to unpack more than 40 different formats, including CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, RAR, Zip or 7Z, you'll only have to double-click its icon and the content of the file will appear on screen, then choose whether to unpack it or run the files without having to unpack it previously. Furthermore, Winrar offers a very good compression ratio above the average, what means the files you compress using it will be smaller than when compressed using other program. Finally, you can also protect files using Rinjdael (AES-128) encryption system, digital signature or protect it against modifications.
Winrar is probably the best compression tool out there. The high quantity of options, as well as its versatility and easiness of use make it a must have for any user.

WinRAR is a 64-bit Windows version of RAR Archiver. It can backup your data and reduce the size of email attachments, decompress RAR, ZIP and other files downloaded from Internet and create new archives in RAR and ZIP file format.
WinRAR's main features are very strong general and multimedia compression, solid compression, archive protection from damage, processing of ZIP and other non-RAR archives, scanning archives for viruses, programmable self-extracting archives (SFX), authenticity verification, NTFS and Unicode support, strong AES encryption, support of multivolume archives, command line and graphical interface, drag-and-drop facility, wizard interface, theme support, folder tree panel, multithread support and Windows x64 shell integration.
It provides complete support for RAR and ZIP archives and is able to unpack and convert CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, Z, 7-Zip archives. It is available in over 50 languages.
How do I extract files with WinRAR?
In order to extract a file using Win RAR in the shell mode you must first open the required archive in the app. This may be achieved in one of several ways: double-click or press Enter on the archive name in the Windows shell (Explorer or Desktop). If the tool was associated with archives during installation (the default installation option), an archive will be opened in the program. You also may associate the tool for PC with archives after installation using the Integration settings dialog; double-click or press Enter on the archive name in the WinRAR window.
How do I handle RAR files?
It provides complete support for RAR files, so you may both create and unpack them. If you installed the program on your computer and downloaded a RAR file from the Internet, you may double click on the RAR file icon to open it in Win RAR, select all files, press the 'Extract To' button, enter a destination path and press 'OK'.
What is the maximum file and archive size limitation?
The size of a RAR or ZIP archive, as well as the size of any single file within a RAR archive, is limited to 8,589,934,591 GB (9,223,372,036,854,775,807 bytes). Note that to create archives larger than 4 GB, you need to use NTFS, as older file systems do not support such large files.
I get an error like 'CRC failed in file name. The file is corrupt'!
File data are corrupt. Archive may be damaged after creation. In this case it is sometimes possible to repair it if it has the recovery record. It also could have been broken while creating, due to hardware failures (usually caused by an over-clocked CPU or unreliable memory).
Note: 40 days trial version.
Also Available: Download RAR for Mac