7-Zip 4.45 Beta

7-Zip is a file archiver with the high compression ratio. The program supports 7z, ZIP, CAB, RAR, ARJ, LZH, CHM, GZIP, BZIP2, Z, TAR, CPIO, RPM and DEB formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format.

The main features of 7-Zip

* High compression ratio in new 7z format with LZMA compression
* Supported formats:
- Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
- Unpacking only: RAR, CAB, ISO, ARJ, LZH, CHM, Z, CPIO, RPM, DEB and NSIS
* 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 63 languages


* Now it's possible to specify the size of solid block and the number of CPU threads in "Add to archive" dialog box.
* Default dictionary size was increased: Normal: 16 MB, Max: 32 MB.
* Speed optimizations.
* Benchmark was improved (new "b" command in command line version).
* The number of DLL files was reduced.
* Now it's possible to associate 7-zip with combined types like .tbz2
* switch -mhcf=off is not supported now.
* If -t{Type} switch is not specified, 7-Zip now uses extension of archive to detect the type of archive.
* Some bugs were fixed.
* New localization: Welsh.

Download: 7-Zip 4.45 Beta freeware
Link: Home Page

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I like this app, but it annoys me more than an estate agent from Birmingham talking loudly on his mobile phone with his mouth full of food on a long train journey that i have to restart windows to complete its installation.

I've never had to restart once in my life from this installation. I install it, I use the portable version, I uninstall it, reinstall newer versions afterwards, etc. and have never once in my life had to restart a machine because of the install procedure.

i agree the interface is fine like it is... straight forward ;)

i been using this for a while now but im still using the 4.42 official one.

installed :)

I think the interface is fine, i mean how long do most people spend staring at their file archiver?