You can use this program to split large file into small chunks which are easy to be sent and stored, while File Joiner allows you to join these split parts together so that the original file is restored. File-SJ can optimize disk-cache and memory usage, this makes File-SJ 3-5 times faster than HJ-Split, WinSplit, MasterSplitter in both splitting and joining tasks. Of course, it is much faster than any compression program. Simple: File-SJ works well on all Windows platforms. File-SJ standard doesn´t need any requirement of installations or complicated DLLs. File-SJ professional has only one simple installation package for integrating File-SJ into shell context menu.

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7-zip is a file archiver with a high compression ratio,
Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format. Thi program works in Windows 98/ME/NT/2000/XP. Command line version of 7-Zip can be used in Linux via Wine program.7-Zip is the free file archiver with the highest compression ratio.

Here are some key features of “7 Zip”:

· 7-Zip is free software distributed under the GNU LGPL
· Highest compression ratio in new 7z format format
· Supported formats: 7z, ZIP, CAB, RAR, ARJ, GZIP, BZIP2, TAR, CPIO, RPM and DEB
· For ZIP and GZIP formats 7-Zip provides compression ratio that is 2-10 % better than ratio provided by PKZip and WinZip
· Self-extracting capability for 7z format
· Integration with Windows Shell
· Powerful File Manager
· Powerful command line version
· Plugin for FAR Manager
· Localizations for 40 languages

Simplyzip is free archiver program for your pc with encrypting capabilities.

full features :

· Open: ZIP, CZIP, ACE, CAB, RAR, TAR, GZIP, LZH, BZ2, SQX, RS, UUE, XXE, BASE64, UCL, ARJ, ZLIB, ALIB, RPM, DEB, 7-ZIP
· Create: 7z, ZIP, CZIP, Cab, LHA, TAR, TAR GZ TAR BZ2, ACE (optionale DLL), Deepfreezer, SQX, UCL, RS, ZIP-SFX/LHA-SFX, RAR-SFX, UUE/XXE, ZLIB and Base64.
· Multi-ZIP
· Backup to disk (e.g. CD)
· ZIP-Rpair
· Crypt files with:Rijndael AES/Twofish (both 256bit keysize) and Blowfish (448bit keysize) incl SFX creator and an ArcConverter
· Optional: See ArcConvert below
· Create RAR/ACE (new version) and LHA SFX (with optional files from my site)
· Localisation: English, German, Italian, Spanish, french, portugues-br, Swedish, Thai and Russian
· ZIPSFX now in English, German, French and Spanish (in the setup)
· Standalone: After installation you can copy all files from Simplyzip folder (excepted the uninst.exe) and use it whereever you want

If you need other compression tool you can use QuickZip Lite 3 , this is a compact version of QuickZip . This program support range of archive types (including zip, 7z, rar, ace, arj, lha and PocketPC Cab). The most interesting features is you can enjoy f ull drag and drop option which allows users to add, extract and delete files without leaving the main screen.

Features:

* Designed for small screen
* Full Drag and Drop
* Queue Monitor
* Thumbnail mode
* Bookmarks
* Search function and Predefined Filters

This is the latest version of Peazip , an OS-portable archiver tool (released for Windows and Linux); it supports it´s native Pea archive format (featuring compression, splitting and flexible encryption and integrity check schemes) and other mainstream formats, with special focus on handling open formats.

Supports 7Z, 7-Zip sfx, ARJ, BZip2, CAB, CHM, CPIO, DEB, GZip, ISO, JAR, LHA, LZH, NSIS, OOo, PAQ, PEA, QUAD, RAR, RPM, split, TAR, Z, ZIP.

PeaZip doesn´t follow the Explorer-like interface paradigm; the interface is more similar to a CD/DVD-burner application, allowing the user to:

* save and restore layout of archives (input files and folders list) to speed up definition of archiving and backup operations;
* save job definition (as plain text, to be used in any script language);
* have a detailed job log after each operation;

Download HjSplit for free, this free program will help  you  split any file you like into parts of a predefined size, so that sharing them or storing them is made easier. It can also join split files back together and compare parts to see if they’re the same.

A small but very effective little utility which will split and rejoin any file you like.
Languages:

English
Minimum requirements for HJSplit:

* OS: Win95/98/98SE/Me/2000/NT/XP/2003/Vista

With AutoUnpack you can automatically download, repair (PAR), and unpack all RAR, 7z, zip, TS - archives, or splitted files (*.001), this tool very useful !

What’s New in version 4.5.2:

New Features:

* Reprocessing time greatly reduced
* Real-time archive status updates
* Skip archives that are probably still in download. (Setting added: “Suggest that an archive is completely downloaded after being idle for X minutes”)
* Show free disk space of source-, and destination drive (real-time)
* Beta version support
* Auto Upgrade check can be disabled
* One can only run one instance of AutoUnpack now

Download UPX now, this is  portable, extendable, high-performance executable packer for several different executable formats. It achieves an excellent compression ratio and offers very fast decompression. Your executables suffer no memory overhead or other drawbacks because of in-place decompression.

What’s New in version 3.03:

* implement cache flushing for PowerPC (esp. model 440)
* fix cache flushing on MIPS (>3 MiB compressed, or with holes)
* fix MIPS big-endian
* bug fixes

Download 7-Zip now, this is a file archiver with a high compression ratio.

The main features of 7-Zip:

* Highest compression ratio in new 7z format with LZMA compression
* 7-Zip is free software distributed under the GNU LGPL
* Supported formats: 7z, ZIP, CAB, RAR, ARJ, GZIP, BZIP2, TAR, CPIO, RPM and DEB
* For ZIP and GZIP formats 7-Zip provides compression ratio that is 2-10 % better than ratio provided by PKZip and WinZip
* Self-extracting capability for 7z format
* Integration with Windows Shell
* Powerful File Manager
* Powerful command line version
* Plugin for FAR Manager
* Localizations for 47 languages
* works in DOS using HX Extender
* There is port of command line version for DOS, Linux/Unix.

Free Compression tool, 7-Zip is a file archiver with a high compression ratio.

The main features of 7-Zip:

* Highest compression ratio in new 7z format with LZMA compression
* 7-Zip is free software distributed under the GNU LGPL
* Supported formats: 7z, ZIP, CAB, RAR, ARJ, GZIP, BZIP2, TAR, CPIO, RPM and DEB
* For ZIP and GZIP formats 7-Zip provides compression ratio that is 2-10 % better than ratio provided by PKZip and WinZip
* Self-extracting capability for 7z format
* Integration with Windows Shell
* Powerful File Manager
* Powerful command line version
* Plugin for FAR Manager
* Localizations for 47 languages
* works in DOS using HX Extender
* There is port of command line version for DOS, Linux/Unix.