WinRAR is a powerful archive manager (Win32, Linux, Mac). RAR files can usually compress content by 8 percent to 15 percent more than ZIP files can. WinRAR is a powerful compression tool with many integrated additional functions to help you organize your compressed archives. It can backup your data and reduce size of email attachments, decompress RAR, ZIP and other files downloaded from Internet and create new archives in RAR and ZIP file format.

WinRAR puts you ahead of the crowd when it comes to compression. By consistently creating smaller archives, WinRAR is often faster than the competition. This will save you disc space, transmission costs AND valuable working time as well. WinRAR is ideal for multimedia files. WinRAR automatically recognizes and selects the best compression method. The special compression algorithm compresses multimedia files, executables and object libraries particularly well.

Features of WinRAR:
- Using WinRAR puts you ahead of the crowd when it comes to compression by consistently making smaller archives than the competition, saving disk space and transmission costs.
- WinRAR provides complete support for RAR and ZIP archives and is able to unpack CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, 7Z, Z archives.
- WinRAR offers a graphic interactive interface utilizing mouse and menus as well as the command line interface.
- WinRAR is easier to use than many other archivers with the inclusion of a special "Wizard" mode which allows instant access to the basic archiving functions through a simple question and answer procedure. This avoids confusion in the early stages of use.
- WinRAR offers you the benefit of industry strength archive encryption using AES (Advanced Encryption Standard) with a key of 128 bits.
- WinRAR supports files and archives up to 8,589 billion gigabytes in size. The number of archived files is, for all practical purposes, unlimited.
- WinRAR offers the ability to create selfextracting and multivolume archives.
Recovery record and recovery volumes allow to reconstruct even physically damaged archives.
- WinRAR features are constantly being developed to keep WinRAR ahead of the pack.

Version 3.90 beta 1


1. RAR compression speed is improved for multi-core
and multi-CPU systems. This improvement is most noticeable
in Windows Vista and Windows 7 operating systems.

2. "Remove duplicate folders from extraction path" option
in "Settings/Compression" dialog is replaced by more universal
"Remove redundant folders from extraction path" option.
This option will eliminate redundant archive name based folders
from extraction path if you unpack an archive with
"Extract to DestName\" context menu command and if archive
root folder contains only one folder and no files.

3. Changes in "Extraction path and options" dialog:

a) "New folder" button creates a new subfolder in currently
selected folder;

F2 key renames a selected folder in the folders tree;

c) F5 key updated the tree pane contents;

d) Del key removes a selected folder in the folders tree.

4. You can enable "Show seconds" option in "Settings/File list"
dialog if you wish to see seconds in file dates in file list
in WinRAR shell.

5. "Where to check for SFX archives" options group
in "Settings/Integration/Context menus items" dialog lets
you to control processing of SFX archives in context menus.
For example, if you frequently right click ".exe" files
on slow network disks, you can turn off "Network disks" options
to minimize the delay before displaying the context menu.

6. If you sort files by name in the file list in WinRAR shell,
WinRAR will use the new logical file name sorting,
same as in Windows Explorer, considering digits in file names
by their numerical value. So files will be sorted as
1.txt, 2.txt, 10.txt instead of previous 1.txt, 10.txt, 2.txt.
This new sort behavior is available in Windows XP Service Pack 2
and newer.

7. Ctrl+W key combination can be used to close the main WinRAR window
also as WinRAR viewer windows. "View as Windows text" shortcut
in WinRAR viewer changed from Ctrl+W to Ctrl+I.

8. New command line switch -r- disables recursion completely.
So 'rar a -r- arc dirname' command will add only the empty
dirname folder and ignore its contents. By default, if dirname
does not include wildcards, RAR adds its contents even if
-r switch is not specified.

9. If used when extracting, the new command line switch -ai forces
RAR to ignore file attributes. When using this switch,
extracted files will always have attributes assigned by
operating system to a newly created file by default.

10. If output file name is not specified in "cw" command, console RAR
will send comment data to stdout.

11. When compressing stdin data with -si[name] switch, RAR sets
modification time of archived entry to current system time.
Previous RAR versions did not fill this field, resulting in
meaningless modification time for stdin.

12. Message displayed when you place the mouse cursor on WinRAR
tray icon includes the archive name now. Previously only
time left and total percent were displayed for archiving operations.

13. Bugs fixed:

a) WinRAR could fail to open tar or tar.gz archive if such archive
contained a file larger than 8 GB;

WinRAR context menu did not work properly in Windows 7 beta
if icons in context menus were enabled and user clicked
a file inside of Windows 7 Library folder;

c) previous WinRAR versions failed to rename files having 5 or more
continuous spaces in the name. WinRAR shell does not display
such spaces for safety reasons, because they can hide an actual
file extension. But this security measure prevented the rename
command to work properly.