From Smith Micro:
StuffIt Standard Edition for Windows makes it easy to access any download or attachment and to send files that transfer quickly and securely. The application can create self-extracting archives that open automatically and also can find compressed files quickly. It has an easy-to-use drag-and-drop interface and wizards to email and upload archives to FTP sites. The application has a StuffIt Catalog that tracks all compressed files, supports RAR and TAR files, and comes with corruption and privacy protection. StuffIt makes it simple to access e-mail attachments and downloads that were compressed on any platform, including Windows, Linux, Unix, and Mac. Plus, you can use the new drag-and-drop tools to open or view the contents of Zip, StuffIt, Tape, or other archives instantly.