* WinRAR introduces an original compression algorithm. It allows
higher compression ratios than other PC archiving tools, especially
for executable files, object libraries, large text files, etc.
* WinRAR offers an optional compression algorithm highly optimized
for multimedia data.
* WinRAR supports files and archives up to 9,223,372,036,854,775,807
bytes in size, about 9000PB. The number of archived files is unlimited
for all practical purposes.
* WinRAR provides complete support for RAR and ZIP 2.0 archives
and is able to unpack CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR,
ISO, Z, 7Z archives.
* WinRAR supports NTFS file security and data streams.
* WinRAR offers both a classic interactive Windows interface
and the command line interface.
* WinRAR provides functionality for creating a 'solid' archive,
which can raise the compression ratio by 10% - 50% over more common
methods, particularly when packing large numbers of small files.
* WinRAR offers the ability to create and change SFX archives using
default and external SFX modules.
* WinRAR offers the ability to create a multi-volume archive as SFX.
* WinRAR offers a number of service functions, such as setting a
password, adding archive and file comments. Even physically
damaged archives may be repaired and an archive may be locked
to prevent further changes. Authenticity information may be
added for additional security and WinRAR will store information
on the last update and name of the archive.

http://rapidshare.com/files/348900138/Winrar_4.6.rar