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.

What's New
· Speed optimizations for LZMA, Deflate, BZip2 and unRAR.
· 7-Zip now supports file pathnames longer than 260 characters.
· Some bugs were fixed.
· New localizations: Bangla, Bashkir, Nepali.

Note: You can use 7-Zip on any computers, including computers in commercial organizations. You don't need to register or pay for 7-Zip.

WinRAR is the most comprehensive compression and archiving utility available. Offering cutting-edge variable compression technology that caters to your individual files, a 128-bit encryption mechanism that ensures your privacy, and blazingly fast compression and decompression; WinRAR makes it incredibly easy to backup and protect your most crucial data.

What's New:
· Bugs corrected:
   a) when unpacking TAR archives, WinRAR 3.70 beta versions
   truncated unpacked names by one character if length
   of unpacked file name was 100 characters or more;

   b) WinRAR 3.70 beta versions could fail to properly unpack
   RAR volumes if number of volumes exceeded 100 and volumes
   used the old style naming scheme.