WinRAR is a powerful compression tool with many integrated additional functions to help you organize your compressed archives.

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 supports all popular compression formats (RAR, ZIP, CAB, ARJ, LZH, ACE, TAR, GZip, UUE, ISO, BZIP2, Z and 7-Zip).

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.

WinRAR allows you to split archives into separate volumes easily, making it possible to save them on several disks for example.

WinRAR is also ideal, if you are sending data through the web. Its 128 bit password encryption and its authenticated signature technology will give you the peace of mind you have been looking for.

Version 4.10:

1. WinRAR can create ZIP archives of practically any size.

2 GB archive size and 65535 file number ZIP limitations of previous
WinRAR versions are not valid anymore.

2. WinRAR can create multivolume ZIP archives, which are also known as
split ZIP files.

ZIP volumes have names like 'volname.zip', 'volname.z01', 'volname.z02'.
Use a volume with ".zip" file extension in all archive processing
operations like starting extraction or opening an archive.

Unlike RAR volumes, ZIP volumes cannot be self-extracting.

WinRAR needs to have access to all ZIP volumes of multivolume file set
at the same time, when creating or unpacking them. So it is impossible
to create or unpack ZIP volumes on removable disks, one volume
per disk. You need to create them all in the same folder.

3. Added the high precision file time support in ZIP archives.
WinRAR can store and extract modification, creation and last access
file time in ZIP archives with 100 nanosecond precision.

You need to set "High precision modification time" option in "Time"
part of archiving dialog to store all 3 times in archive.
Set appropriate "File time" options in "Advanced" part of extraction
dialog to choose times to extract.

4. Added support for Unicode names stored in ZIP extra field data.
Different ZIP tools store Unicode names either in file header
or in ZIP extra field and now WinRAR can correctly process both types
of Unicode names.

5. "Synchronize archive contents" option and -as command line switch are
supported in ZIP format.

6. Modifications of switch -ag behavior:

a) -ag can be used with all RAR and WinRAR commands, not just
with archiving only;

b) 'N' format character behavior differs in archiving and non-archiving
operations. When archiving, it is incremented until the first unused
name is found. In non-archiving operations like extracting it selects
the existing archive preceding the first unused name;

c) 'I' format character allows to specify minutes regardless of presence
and position of 'H' (hours) in format string. It can be used
instead of 'M' (minutes), when you wish to place minutes before hours
or do not need hours at all.

7. By default, WinRAR proposes to update an archive if viewer modified
an opened file or created any new files. New "Ignore modifications for"
option in "Settings/Viewer" dialog allows to disable such behavior.
You can enter one or several file masks separated by spaces here
and WinRAR will not prompt to update an archive if file created
or modified by viewer matches one of these masks.