Download Free Winrar 32 Bit For All Windows

WinRAR is a shareware file archiver and compressor utility for Windows. It can create archives in RAR or ZIPfile formats, and unpack numerous archive file formats. There is an Android app called "RAR for Android",and command-line versions called "RAR" and "UNRAR" (widely released since autumn of 1993), available for Mac OS X, Linux, FreeBSD, Windows console mode, and MS-Dos.

Overview

WinRAR and the RAR file format has evolved over time. Starting with WinRAR version 5, support for a new archive format RAR5 was added, incompatible with the previous one, but also using the same RAR file extension. With the introduction of RAR5, the older RAR file format is now referred to as RAR4. WinRAR version 5 can read or write RAR4 or RAR5 archives, but older WinRAR doesn't support RAR5 archives.

The new RAR5 file format added numerous features, but removed comments for each file (though archive comment still remains), authenticity verification, and compression algorithms for specialized text and multimedia. RAR5 also changed the file name for split volumes from "archivename.rNN" to "archivename.partNN.rar".

The RAR5 file format increased the maximum dictionary size to 1 GiB, thus allowing a WinRAR user to choose between 11 different compression directory sizes from 1 MiB to 1 GiB. The default directory size in WinRAR version 5 was increased from 4 MiB to 32 MiB typically resulting in higher compression ratio, though the user can change the default setting back to 4 MiB.

RAR5 also enhanced or added optional features: optional AES encryption was increased from 128-bit to 256-bit, option for 256-bit BLAKE2 file hashing algorithm (instead of default 32-bit CRC32), optional duplicate file detection, optional NTFS hard and symbolic links, optional Quick Open Record to allow large archives to be opened faster, maximum path length for files in RAR and ZIP archives is increased up to 2048 characters.

Features[

• Pack (create) or validate (test) RAR or ZIP archive files. Choice of RAR4 or RAR5 file format.
• Unpack ACE, ARJ, BZ2, CAB, EXE, GZ, ISO, JAR, LHA, RAR, TAR, UUE, XZ, Z, ZIP, ZIPX, 7z archive files.
• Multiple-core CPU threading compression and decompression.

When creating RAR archive files:

• Support for maximum file size of 16 EiB (2⁶⁴ bytes) minus 1.
• Choice of compression directory size from 1 MiB to 1 GiB (256 MiB limit on 32-bit Windows). Default size is 32 MiB.
• Optional 256-bit BLAKE2 file hash in addition to default 32-bit CRC32 file checksum.
• Optional encryption using AES (Advanced Encryption Standard) with a 256-bit key.
• Optional data redundancy is provided in the form of Reed-Solomon recovery records and recovery volumes, allowing reconstruction of damaged archives.
• Optional "Quick Open Record" to open RAR files faster.
• Ability to create multi-volume (split) archives 
• Ability to create self-extracting files.
• Support for advanced NTFS file system options, such as NTFS hard and symbolic links
• Support for maximum path length for files up to 2048 characters (stored in UTF-8 format).
• Optional archive comment (stored in UTF-8 format).

License

The software is distributed as a shareware and anyone may use it during a test period of 40 days at no charge.

Although archiving with the RAR format is proprietary, Rarlabs supply as copyrighted freeware the source code of the UnRAR unpacker, with a license allowing it to be used in any software, thus enabling others to produce software capable of unpacking, but not creating, RAR archive

                                               Click Here To Downlaod



                             

Read More

Download Free 7 Zip Free

7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. The 7z format initially appeared as implemented by the 7-Zip archiver. The 7-Zip program is publicly available under the terms of the GNU Lesser General Public License. The LZMA SDK 4.62 was placed in the public domain in December 2008. The latest stable version of 7-Zip and LZMA SDK is version 9.20.

The official 7z file format specification is distributed with 7-Zip's source code. The specification can be found in plain text format in the 'doc' sub-directory of the source code distribution.

Features and enhancements

The 7z format provides the following main features:

• Open, modular architecture which allows any compression, conversion, or encryption method to be stacked.
• High compression ratios (depending on the compression method used)
• Rijndael/AES-256 encryption.
• Large file support (up to approximately 16 exbibytes).
• Unicode file names
• Support for solid compression, where multiple files of like type are compressed within a single stream, in order to exploit the combined redundancy inherent in similar files.
• Compression and encryption of archive headers.
• Support for multi-part archives : e.g. xxx.7z.001, xxx.7z.002, ... (see the context menu items Split File... to create them and Combine Files... to re-assemble an archive from a set of multi-part component files)

The format's open architecture allows additional future compression methods to be added to the standard.

Compression methods

The following compression methods are currently defined:

• LZMA – A variation of the LZ77 algorithm, using a sliding dictionary up to 4 GB in length for duplicate string elimination. The LZ stage is followed by entropy coding using a Markov chain-based range coder and binary trees.
• LZMA2 – modified version of LZMA providing better multithreading support and less expansion of incompressible data.
• Bzip2 – The standard Burrows–Wheeler transform algorithm. Bzip2 uses two reversible transformations; BWT, then Move to front with Huffman coding for symbol reduction (the actual compression element).
• PPMd – Dmitry Shkarin's 2002 PPMdH (PPMII/cPPMII) with small changes: PPMII is an improved version of the 1984 PPM compression algorithm (prediction by partial matching).
• DEFLATE – Standard algorithm based on 32 kB LZ77 (LZSS actually) and Huffman coding. Deflate is found in several file formats including ZIP,gzip, PNG and PDF. 7-Zip contains a from-scratch DEFLATE encoder that frequently beats the de facto standard zlib version in compression size, but at the expense of CPU usage.

A suite of recompression tools called AdvanceCOMP contains a copy of the DEFLATE encoder from the 7-Zip implementation; these utilities can often be used to further compress the size of existing gzip, ZIP, PNG, or MNG files.

Pre-processing filters

The LZMA SDK comes with the BCJ / BCJ2 preprocessor included, so that later stages are able to achieve greater compression: For x86, ARM, PowerPC (PPC), IA-64 Itanium, and ARM Thumb processors, jump targets are normalized before compression by changing relative position into absolute values. For x86, this means that near jumps, calls and conditional jumps (but not short jumps and conditional jumps) are converted from the machine language "jump 1655 bytes backwards" style notation to normalized "jump to address 5554" style notation; all jumps to 5554, perhaps a common subroutine, are thus encoded identically, making them more compressible.

• BCJ – Converter for 32-bit x86 executables. Normalise target addresses of near jumps and calls from relative distances to absolute destinations.
• BCJ2 – Pre-processor for 32-bit x86 executables. BCJ2 is an improvement on BCJ, adding additional x86 jump/call instruction processing. Near jump, near call, conditional near jump targets are split out and compressed separately in another stream.
• Delta encoding – delta filter, basic preprocessor for multimedia data.

Similar executable pre-processing technology is included in other software; the RAR compressor features displacement compression for 32-bit x86 executables and IA-64 executables, and the UPX runtime executable file compressor includes support for working with 16-bit values within DOS binary files.

                              Click Here To Download 

                                  

Read More

Downlaod Free Winrar 64 Bit For All Windows

WinRAR is a shareware file archiver and compressor utility for Windows. It can create archives in RAR or ZIPfile formats, and unpack numerous archive file formats. There is an Android app called "RAR for Android",and command-line versions called "RAR" and "UNRAR" (widely released since autumn of 1993), available for Mac OS X, Linux, FreeBSD, Windows console mode, and MS-Dos.

Overview

WinRAR and the RAR file format has evolved over time. Starting with WinRAR version 5, support for a new archive format RAR5 was added, incompatible with the previous one, but also using the same RAR file extension. With the introduction of RAR5, the older RAR file format is now referred to as RAR4. WinRAR version 5 can read or write RAR4 or RAR5 archives, but older WinRAR doesn't support RAR5 archives.

The new RAR5 file format added numerous features, but removed comments for each file (though archive comment still remains), authenticity verification, and compression algorithms for specialized text and multimedia. RAR5 also changed the file name for split volumes from "archivename.rNN" to "archivename.partNN.rar".

The RAR5 file format increased the maximum dictionary size to 1 GiB, thus allowing a WinRAR user to choose between 11 different compression directory sizes from 1 MiB to 1 GiB. The default directory size in WinRAR version 5 was increased from 4 MiB to 32 MiB typically resulting in higher compression ratio, though the user can change the default setting back to 4 MiB.

RAR5 also enhanced or added optional features: optional AES encryption was increased from 128-bit to 256-bit, option for 256-bit BLAKE2 file hashing algorithm (instead of default 32-bit CRC32), optional duplicate file detection, optional NTFS hard and symbolic links, optional Quick Open Record to allow large archives to be opened faster, maximum path length for files in RAR and ZIP archives is increased up to 2048 characters.

Features[

• Pack (create) or validate (test) RAR or ZIP archive files. Choice of RAR4 or RAR5 file format.
• Unpack ACE, ARJ, BZ2, CAB, EXE, GZ, ISO, JAR, LHA, RAR, TAR, UUE, XZ, Z, ZIP, ZIPX, 7z archive files.
• Multiple-core CPU threading compression and decompression.

When creating RAR archive files:

• Support for maximum file size of 16 EiB (2⁶⁴ bytes) minus 1.
• Choice of compression directory size from 1 MiB to 1 GiB (256 MiB limit on 32-bit Windows). Default size is 32 MiB.
• Optional 256-bit BLAKE2 file hash in addition to default 32-bit CRC32 file checksum.
• Optional encryption using AES (Advanced Encryption Standard) with a 256-bit key.
• Optional data redundancy is provided in the form of Reed-Solomon recovery records and recovery volumes, allowing reconstruction of damaged archives.
• Optional "Quick Open Record" to open RAR files faster.
• Ability to create multi-volume (split) archives 
• Ability to create self-extracting files.
• Support for advanced NTFS file system options, such as NTFS hard and symbolic links
• Support for maximum path length for files up to 2048 characters (stored in UTF-8 format).
• Optional archive comment (stored in UTF-8 format).

License

The software is distributed as a shareware and anyone may use it during a test period of 40 days at no charge.

Although archiving with the RAR format is proprietary, Rarlabs supply as copyrighted freeware the source code of the UnRAR unpacker, with a license allowing it to be used in any software, thus enabling others to produce software capable of unpacking, but not creating, RAR archives.

                               Click Here To Download

   

 

Read More