Check out the press release for ZipIt 2.0!

• Native support for Mac OS X
  ZipIt runs natively on Mac OS 8.6, Mac OS 9.x, and Mac OS X. It reaps the benefits of all the great new features in Mac OS X, while still retaining compatibility with older operating systems.
• Intuitive user interface
  ZipIt 2.0 has a completely redesigned user interface. It allows you to view archives in a hierarchical list, just like the Finder. Full support for the Appearance Manager means ZipIt's look and feel is customizable with the rest of the computer. Overall, this is the easiest version of ZipIt to use ever.
• Self-extracting archives
  ZipIt now allows you to create self-extracting archives. These files can be decompressed on a Macintosh or on a PC simply by double-clicking. There is no need for the person receiving the file to own ZipIt!
  
  
• Full support for Macintosh files
  ZipIt allows you to store Macintosh files without losing any information, by encoding them in a standard format called MacBinary. If you select this option, then ZipIt will add special information that allows it to reconstruct everything the Macintosh needs to know about a file. However, this extra information will confuse other unzipping programs, so if you intend for your zip archive to be transmitted to a PC, Unix, or other machine, you should not use MacBinary.
  
  
• Folder structure support
  You can maintain full directory structure information with ZipIt. This directory structure will carry over when you unzip your archive on another machine, and if you create your archive on another machine, ZipIt will recognize the directory structure if that information is included in the archive. In other words, you can have folders within folders, without restriction.
  
  
• Extension mapping
  On machines other than the Macintosh, a file's type is often determined by a one to three letter extension at the end of the name. For instance, the file hello.txt would be interpreted as a text file. ZipIt recognizes the most common extensions, and maps them to Macintosh file types and creators. You can easily modify ZipIt's extension mappings, using InternetConfig if you have it, or ZipIt's own dialog box if you do not.
  
  
• Encryption
  In versions of ZipIt registered inside the United States and Canada, you may use ZipIt's encryption feature to encrypt files stored within your archive. ZipIt's encryption is, again, compatible with PKZip's, so you can transmit encrypted material to and from IBM-compatible machines. Unfortunately, at this time, ZipIt does not support encryption outside the US and Canada, due to United States export laws. Also note that the encryption techniques used by ZipIt and PKZip are not invincible, and can be circumvented by a determined expert.
  
  
• Segmenting
  Multi-segment archives are fully supported in ZipIt 2.0.
  
  
• AppleEvent and AppleScript support
  ZipIt is fully scriptable, using AppleEvents and AppleScript. Many functions may also be recorded with the Script Editor.
  
• Drag and Drop
  ZipIt fully supports Macintosh Drag and Drop. You can unzip files simply by dragging them to the desktop, and zip files by dragging them from the desktop to an archive window.