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7zip

7-Zip is an application compensate both win zip and winrar,because it compress and uncompressed both zip  and rar file,so it ios very easy to the user to use 7zip for compressing the file..,full version available here..download here..,

Download links

7-Zip for xp,vista,windows7

http://rapidshare.com/files/222911563/Firefox_20Setup_203.0.8.exe

7-Zip for Mac

http://rapidshare.com/files/230271353/EZ_207z.zip

7-Zip for Linux

http://rapidshare.com/files/230271373/7z465.tar.bz2