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    PowerArchiver

    After 15 months in development, we are pleased to announce Beta 1 of PowerArchiver 2009! From now on PowerArchiver will come in two versions: Standard and Professional. PowerArchiver 2009 Pro adds new features such as CD/DVD/BD burning, FTP Client and advanced PowerArchiver backup options. View the forums thread for further information on the beta. Here is the full list of changes in this new release:

    Standard Edition
    Main Application:
    Preview window - easily preview archives, images, text and many other file types, without having to open archive or file. Works both while browsing drives and inside archives. Supports Plug-ins.
    Backup list window - see your backups on integrated list for easier usage.
    Speed - overall great speed improvements in compression and extraction, especially in Vista with RAR/ZIP files.
    New ZIP Engine - zip can now compress files in use; proper progress window.
    Improved 7-Zip Engine - support for fast updating of non-solid archives, themed overwrite dialogue with proper options.
    Unicode support - better support for Unicode in 7-zip and RAR formats.
    New Configuration window - easier to use configuration window.
    Modern/Classic interfaces - streamlined for easier use, more MRU's.
    Archive Convertor - added "save password for current session" option.
    Encrypt Tool - completely redone - now option to create zip and 7zip encrypted archives, as well as encrypt current archives to 3 different formats (zip, 7-zip, pae).
    Batch Archive tool - added "Add subfolders to separate archives" option.
    Multi Extract tool - added "File's current folder" and "Save password for current session" options.
    Add window - redone for easier usage and more options added.
    Transparent Updating - added support for updating solid cab archives.
    Web Update - now checks for PAOP updates as well as any other PA component.
    Installer - future updates can now come in form of patches.
    64bit skinning engine for x64 systems.

    Backup:
    Interface - completely new interface with sidebar navigation.
    File list support - export/import file lists.
    Filters - added include and exclude filters at the same time.
    Backup Types - added full/incremental/differential backup types.

    Shell Extensions:
    Unicode - completely rewritten for Unicode support.
    Reorganized - more features, more options, less clutter.
    Improvements/Bug Fixes:
    Many improvements and bug fixes.
    http://www.powerarchiver.com

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    Beta 2 of PowerArchiver 2009 11.0 Available

    The second beta release of PowerArchiver 2009 is now available for download. This beta brings the following changes:
    First time in 7-Zip - Optimized compression that automatically selects best method between lzma and ppmd, for up to 40% smaller archive size.
    Major 7-Zip improvements: delete, rename and update contents of 7zip files.

    7-Zip encryption - added support for 7-Zip encrypted file names (read/write).
    Faster startup time as much as 40% in certain situations.
    Fixed Bug #651: open with MRU has icons for top 5 icons only.
    Fixed Bug #649: cant read specific archive in explorer view.
    Fixed Bug #638: when preview, change file via mouse does not work.
    Fixed Bug #654: full and differential backups are not working properly.
    Fixed Bug #659: backup: align timestamp text.
    Fixed Bug #650: noop command for server timeouts.
    Fixed Bug #660: Add folders in SFX Wizards does not work.
    Fixed Bug #619: PA does not show error if no permissions to write to ftp.
    Fixed Bug #661: drag and drop inside unicode 7zip archive does not work.
    Fixed Bug #655: crash after web update, especially under Vista x64.
    Fixed Bug #594: backup does not detect if there is no burner on computer.
    Fixed Bug #652: problem when using open with while splash is enabled.
    Fixed Bug #656: fixed tabbing in ftp edit boxes.
    Fixed Bug #666: 120dpi issues in backup scheduler.
    Fixed Bug #669: various smaller backup issues.
    Fixed Bug #664: 120dpi issues in config.
    Fixed Bug #665: changes to how file size limits in preview are implemented.
    Last edited by squxe; 7th August 2008 at 11:25.

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    As we get closer to the final release of PowerArchiver 2009 11.0, we released Beta 3 for testing. This latest beta brings the following changes:
    Improved 7-Zip optimized settings (faster, stronger).
    Added autoplay events for the CD/DVD/BD Burner.
    Improved CD/DVD/BD Burner speed.
    Better PAOP2 update checking.
    Improved PA Starter Queue interface.
    Slightly faster speed while compressing/extracting.
    Implemented more skinning options.
    Many other smaller improvements and fixes.
    Fixed Bug #704: Progress not shown when opening some large files.
    Fixed Bug #712: Updating 7-Zip non solid archives.
    Fixed Bug #705: PA cant recognize specific RAR SFX
    Fixed Bug #706: Extract to filename/ does not work with some specific names.
    Fixed Bug #708: MSI plug-in not working properly.
    Fixed Bug #677: Compression plug-ins affecting certain RAR files.
    Fixed Bug #698: Right click, new folder refreshes, collapses folders.
    Fixed Bug #700: Refresh collapses tree in folder view.
    Fixed Bug #699: Rename in treeview does not work.
    Fixed Bug #697: Wrong password in converter creates empty file.
    Fixed Bug #485: Can not D&D from desktop to FTP.
    Fixed Bug #463: FTP: D&D inside folders does not work.
    Fixed Bug #684: Move option keeps file in original location.
    Fixed Bug #693: Add folders does not work in 7-Zip SFX Wizard.
    Fixed Bug #688: No compression when running 7zip backup from Windows.
    Fixed Bug #680: Importing sessions issue.
    Fixed Bug #590: D&D archive into archive asks for overwrite.

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    Did anyone test pa b3 against 7z in lzma mode?
    How big are the improvements?
    Did pa b3 use the same amount of memory as 7zip for lzma? Or less, like freearc?

    thx TT

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    Programmer Bulat Ziganshin's Avatar
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    it just selects optimal compression algorithm/settings. i've tested it on my "real world" sample - it was 1% better and 1.5-2x faster. in other tests it may compress even bit worse that 7z while speed difference is rather typical

    so it may be considered as "7z which doesn't apply slow lzma algorithm to text/incompressible data"

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    quick test

    Opera 9.51 international portable (http://www.opera-usb.com/download/opera951int.zip)
    size - 18*103*606 (17,2 Mb)
    FreeArc 0.50a (aug 3) - (Maximum (1gb decompression): -mx -ld=1gb)
    6,42 Mb (6*739*977)
    PowerArchiver 2009 beta3 - (ultra, solid, use optimised compression)
    6,47 Mb (6*785*451)
    7-Zip 4.59 alpha 6 - ultra (lzma, solid, 64 mb, word 64)
    6,64 Mb (6*965*810)
    WinRar 3.71 - best
    6,76 Mb (7*096*892)

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    You need to change some of your WinRAR options ;p -mc63:128t works well on this example, gets it down to ~6.71 Mb

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    PowerArchiver 2009 Beta 4 Available

    Beta 4 brings the following changes:
    Faster startup speed 10-30%. Less memory usage.
    CD/DVD/BD Burner: added verify option.
    Virtual Drive: added option to limit number of drives for easier remounting.
    Improved RAR associations and shell integration.
    Added folders to include/exclude in backup.
    Enlarged folder selection window for easier use.
    Many other smaller improvements and fixes.
    Fixed Bug #737: View selection issue.
    Fixed Bug #726: MV rar extraction in 64bit shell.
    Fixed Bug #724: Importing sessions in Burner.
    Fixed Bug #728: Changing skins.
    Fixed Bug #725: Multi extract drive select.
    Fixed Bug #730: Vertical position of preview/backup.
    Fixed Bug #672: PA Starter queue keyboard delete.
    Fixed Bug #719: Nag screen different expiration main/shell.
    Fixed Bug #717: 7-Zip SFX asking to overwrite file.
    Fixed Bug #718: New Folder option in explorer view.
    Fixed Bug #701: Plugins detect info and support for SWFView.
    Fixed Bug #729: Opening any other MV file than .rar.

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    7-Zip Optimized Compression in PowerArchiver

    What is it?
    From PowerArchiver 2009, we have added feature called Optimized 7-Zip compression. This feature is currently unique to PowerArchiver 2009.

    With Optimized Compression we have tried to solve one of the most important issues that 7-Zip has when compared to ZIP and RAR formats, which is speed and automatic detection of content being compressed.

    What does it do?
    With Optimized compression feature on, PowerArchiver tries to smartly detect files that are being compressed and assign special compression methods to improve either speed or compression. In the case of text files, it automatically uses PPMd compression for them (instead of LZMA) which has a lot better compression ratio and is also faster. For files that can not be compressed further, it uses different LZMA settings to speed up compression without losing compression strenght. It also works great with solid setting on, which is reccomended as not only it increases compression strenght but also speed as well.

    Results
    Results are double the compression strenght on text files, and double the speed on files that can not be compressed (mp3, avi, mpeg, etc). Obviously these are the best case scenarios, and in real life usage it depends on data that you are trying to compress.

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    PowerArchiver 2009 Beta 5 Released
    Changes include:
    Significantly improved startup speed when explorer view is on, as well as opening of folder windows.
    Copy and Paste implemented in some parts of interface - explorer view when browsing hard disk, preview (text).
    Added Drag and Drop support to Burner.
    Improved errors and logging in Backup.
    Improved updating of archives on DVD/RW drives in Backup.
    Fixed Bug #773: Save session password inconsistent in PA.
    Fixed Bug #758: Various specific backup issues.
    Fixed Bug #776: Opening files in TAR archives with same filename.
    Fixed Bug #771: Relative path does not work in SFX Wizard.
    Fixed Bug #772: Spanning archive in shell shows AV,
    Fixed Bug #770: Compress folder in shell does not work (zip).
    Fixed Bug #769: 7z does not ask for overwrite in shell.
    Fixed Bug #768: 120dpi issue in registration screen.
    Fixed Bug #767: Encrypt tool does not always delete _enc.
    Fixed Bug #765: AV when converting 7z to Zip.
    Fixed Bug #766: AC when encrypting to ZIP.
    Fixed Bug #753: Issue when quickly opening archives with slow preview.
    Fixed Bug #762: Backup saves some non existing filenames in specific cond.
    Fixed Bug #759: Tabbing issues in config.
    Fixed Bug #761: Only part1-part9.rars open.
    Fixed Bug #763: 120dpi issue in backup.
    Fixed Bug #734: About sfx screens need update.
    Fixed Bug #747: Backup logs not always compressed.
    Fixed Bug #755: changed extract to folder/ behaviour.
    Fixed Bug #754: applicatio button (orb) does not work in b4.
    Last edited by squxe; 28th September 2008 at 01:35.

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    September 26, 2008
    PowerArchiver 2009 Final Launches!
    After 17 months in development, we are pleased to announce the launch of PowerArchiver 2009! From now on PowerArchiver will come in two versions: Standard and Professional.

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    Question Writing PowerArchiver Plugins

    I have been looking at using PowerArchiver for everyday use along with Winrar. One thing I have come across in my research is the lack of plugins. I know the new version says it supports Total Commander WCX and WLX plugins, but apparently there are some conflicts with quite a few plugins. I have tried to find some info on writing my own plugins, but have found, refererences (PA Forums), but no instruction. For instance, I would love to write a plugin for FreeArc, because of its custom engine and compression configurations. There is already a MultiArc plugin for FreeArc, but MultiArc does not work in PA. Is there any link you can give me which describes how to write a PA plugin, or perhaps e-mail the info, if there is no specific link.

    Appreciate any help!

    HookEm!!

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    Programmer Bulat Ziganshin's Avatar
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    PA supports WLX plugins from total commander, it should work fine. if not - yell about concrete problem at their forum

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    Since this version, I am becoming a big fan of PA, so find here some quick (and dirty benchmarks):

    I have compressed full PowerArchiver x64 portable in my SSD disk, so it is easy for you to reproduce.

    - Uncompressed size: 176.473.679 bytes.
    - 7-Zip 17.00 Ultra LZMA2 128MB fb273 myx=9: 28.323.572 bytes.
    - PowerArchiver 17.00.69 pa Extreme Optimize Strong: 27.114.421 bytes.

    Here is my review (in spanish), if someone is interested: http://www.javiergutierrezchamorro.c...iver-2017/2992

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    Quote Originally Posted by nikkho View Post
    Since this version, I am becoming a big fan of PA, so find here some quick (and dirty benchmarks):

    I have compressed full PowerArchiver x64 portable in my SSD disk, so it is easy for you to reproduce.

    - Uncompressed size: 176.473.679 bytes.
    - 7-Zip 17.00 Ultra LZMA2 128MB fb273 myx=9: 28.323.572 bytes.
    - PowerArchiver 17.00.69 pa Extreme Optimize Strong: 27.114.421 bytes.

    Here is my review (in spanish), if someone is interested: http://www.javiergutierrezchamorro.c...iver-2017/2992
    I think its better to be compared with Stuffit

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    Member nikkho's Avatar
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    Quote Originally Posted by maadjordan View Post
    I think its better to be compared with Stuffit
    Makes sense. But Stuffit is abandoned/not updated since 2010.

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    maybe stuffit has not been updated for a long time because no competition has lossless optimizer as it has (I've attached screen shot of stuffit advanced options).. Maybe PowerArchiver will change that..
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Here is a quick test on compressing my portable Softmaker Office 2016. I have used best possible compression settings, and have added WinZIP, which features also lossless JPEG recompression:

    Program: Compressed size / Compression time / Decompression time
    PowerArchiver 17.00.69: 106.674.478 bytes / 254s / 51s
    Stuffit 2010SR1: 149.756.891 bytes / 126s / 63s
    WinZIP 21.0: 138.940.569 bytes / 43s / 21s

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    I tried archiving ubuntu-17.04-desktop-amd64.iso with maximum parameters. In WinRAR and FreeARC I used maximum possible compression with auto recovery record and modification protection. PowerArchiver was confusing (I am not sure I have a recovery record and protection. I am not sure if PA was the right format to be used).

    Original ISO file: 1,609,039,872 bytes
    WinRAR (RAR5): 1,627,674,908 bytes
    FreeARC: 1,601,153,096 bytes
    PA: 1,571,075,109 bytes

    PA did quite well, but given that I don't know if I am comparing apples to apples, I don't know if I can trust it.

    FreeARC is my current choice for big compression jobs when I am willing to pay with time to get best compression.

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    FreeARC next gen at maximum compression for ubuntu-17.04-desktop-amd64.iso: 1,585,001,180 bytes (smallest to date).

    Unfortunately FreeARC Next is not officially released.

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    Quote Originally Posted by Sergei G View Post
    FreeARC next gen at maximum compression for ubuntu-17.04-desktop-amd64.iso: 1,585,001,180 bytes (smallest to date).
    Sorry to say, but PA with also maximum compression settings beat it: 1.571.555.291 bytes.

    Click image for larger version. 

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    Member nikkho's Avatar
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    By the way, same ISO with 7-Zip 17.00: 1.574.976.237 bytes.

    Click image for larger version. 

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    this file is barely compressible, so lzma2-enabled archivers takes over lzma ones

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    With the new switches in PowerArchiver, the reduction was amazing, going from 1.571.555.291 bytes to 1.037.033.705 bytes!!
    Switches wers: c_out=plzma4:mt4:c16M:d128M:mc16:fb273:lc1:lp0:pb0 :a1; c_adr=plzma4:mt1:d22:lc0:pb2:lp2:fb273; c_hif=lzma2:x1:d22:mt1; rep1:fb15000:c300M:mem2000M { reflate:x9{ x64flt2{ deltb:c=1000K { deltb:c=1001K { c_out }} } / c_hif } }

    Click image for larger version. 

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    Click image for larger version. 

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    apparently the reduction was achieved by reflate, so you may test FreeArc with Precomp to have a comparable result

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    I guess the fact of PowerArchiver being a commercial product, and closed source, is the reason for it, not raising so much interest here, even if the good compression ratios it is getting.

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    Its not like there's anything new - I've been posting all individual codecs from it here :)
    Also, sources are not available only for reflate - most of other stuff can be found somewhere in my file dump.

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    Quote Originally Posted by Shelwien View Post
    Its not like there's anything new - I've been posting all individual codecs from it here
    Also, sources are not available only for reflate - most of other stuff can be found somewhere in my file dump.
    So with the exception of reflate, is it possible to approach this compression ratio with 7zip, or would we need to combine a bunch of esoteric codecs to achieve the same results without having to use PowerArchiver?

    Some third party codecs are available for 7zip already (zstandard, brotli, etc.); it would be fantastic if this entire thing could be approximated using 7zip and codec fortifications. Do you think this is possible, or is PowerArchiver the only product to have achieved such integration at this time?

    Also, strange they would not offer this in their default "maximum" settings, but require a very complex compression parameter string for it.

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