7-Zip is now up to version 4.52 (beta). Here are some of the most recent improvements:

• Encryption strength for .7z format was increased.
• 7-Zip now can unpack Compound files (msi, doc, …).
• Speed optimizations for AES encryption.
• 7-Zip now can unpack WIM archives
• 7-Zip now replaces incorrect characters in filenames during extracting.

7-Zip for 32-bit Windows

Latest Version: 4.52 (beta)
Platform: Any version of Windows, including Vista.
Author: Igor Pavlov
Price: Free (FOSS)
Download Link: http://sourceforge.net/projects/sevenzip/

Related articles:

• ZIP Up Files from the Command Line
• Quick Link: 7-Zip 4.47 in Beta

Read more: Windows, Security