* WinRAR introduces an original compression algorithm. It provides high compression ratios on executable files, object libraries,large text files, etc.

* WinRAR offers an optional compression algorithm highly optimizedfor multimedia data.

* WinRAR supports files and archives up to 9,223,372,036,854,775,807bytes in size, about 9000PB. The number of archived files is unlimitedfor 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.