hfsutils is a comprehensive software package being developed to permit manipulation of HFS volumes from UNIX and other systems. HFS is the ``Hierarchical File System,'' the native volume format used on modern Macintosh computers. The software reads and writes HFS (but not HFS+) volumes with several command-line programs and optionally an X interface. The software can also be used as a C library.
tkbiff allows arbitrary commands to be executed upon mail reception. If you like programs such as xbiff and xbiff++ but wish they were more flexible, then you'll like tkbiff. Unlike other biffs, tkbiff is fully customizable. tkbiff also doesn't waste your valuable screen space with icons; instead, it shows you the mail itself. It supports UNIX, Mac, and Windows, IMAP, POP, and UNIX-style mail files, and SSL and APOP.