Lotus Development Corp added cc:Mail for Unix, an Open Look graphical user interface implementation of cc:Mail with built-in support for Simple Mail Transfer Protocol-based electronic mail systems: it runs on Sun Microsystems Inc workstations and provides the same functionality as the MS-DOS, OS/2, Windows and Macintosh versions; it will be out at the end of the month at $900 for the Unix Platform Pack; User Packs for any version cost $345 for 10, $3,300 for 100 users.