安裝版與免安裝版的差異在於安裝版可以整合至滑鼠右鍵選單，也就是解壓縮檔案，可透過滑鼠右鍵的功能選單進行解壓縮檔案，而免安裝版則不會整合至滑鼠右鍵選單。
1.6.1 (05/12/2010)
Added support for environmental variables (eg., specify %temp% for debug dir)
Added support for XZ compressed files and txz/tlz archives via 7-Zip
Added support for Windows Installer merge modules (.msm) via MsiX
Added support for NBH files via NBHextract
Added translations for Armenian, Czeck, Persian (Farsi), Serbian, Swedish
Changed 7-Zip unpacking behavior;
now attempts brute force extraction only after External PEiD scan;
change due to aggressive .exe resource extraction in new versions
Changed Windows installer support (.msi, .msp) to use MsiX instead of msi2xml
Changed LZMA support to use 7-Zip for extraction
Changed FEAD support to use PEiD rather than TrID for detection
Changed following formats to call 7z by name (also see 7-Zip debug comment):
bz2, chm, gz, tar, Z
this is mostly for code cleanup; functionality should be the same
Fixed InstallShield 5.x regression in 1.6 preventing successful extraction
Fixed bug in extraction of non-TAR LZW compressed files
Fixed bug that prevented picking files after toggling history option
Fixed bug in display of history combo boxes when no items listed
Fixed cosmetic bug in Visual C++ SFX status dialog
Fixed cosmetic bug in status dialogs due to extra padding by AutoIt
Removed lzma helper binary
Removed msi2xml helper binary and MSXML download link on MSI selection page
Removed Windows NT 4.0 support from installer
Removed debug output for 7-Zip, arj, hlp;
buffers output, preventing proper user feedback and input prompts
Updated success/fail detection to check output directory timestamp;
can detect cases where files are overwritten, which old method missed;
will still consider failed if user chooses not to overwrite files,
or if all files are written to a subdirectory of the output directory
Updated RPM and DEB support to extract interim CPIO and TAR files
Updated FEAD support to workaround read-only permission issue
Updated Zip support to log unzip output and permit minor reported unzip errors
Updated PEiD detection of Microsoft SFX cab files for more reliable extraction
Updated some UniExtract window sizes for better internationalization support
Updated translations for Italian, Korean, Russian
Updated 7-Zip to 9.13 beta
Updated AutoIt to 3.3.6.1 and replaced deprecated _ArrayCreate UDF
Updated InfoZip unzip to 6.0.0
Updated Inno Setup to 5.3.9
Updated innounp to 0.31 (supports Inno Setup 5.3.9)
Updated InstallExplorer WCX to 0.9.2
Updated MSI WCX to 1.2.1
Updated PEiD to 0.95
Updated UnRAR to 3.93 Homepage - www.legroom.net/software/uniextract
Homepage - www.legroom.net/software/uniextract
WinRAR 3.93 Final 版本解壓