GammaTech Utilities (1993) 1 Utility OS2

GammaTech Utilities is a "must-have" set of disk tools for OS/2, including an HPFS disk optimizer, undelete, file recovery, file wiping, enhanced directory list, and delete tree.

• 2.x
• 3.x

IBM AntiVirus (1995) 10 Utility DOS OS2

IBM AntiVirus is a comprehensive but easy to use virus scanner that supports DOS, OS/2, and Windows. It features the use of "Neural Network" technology, whatever that means, heuristic analysis, change detection, and false alarm elimination. It supports scanning e-mail, attachments, macros, and the ability to run suspicious programs without spreading infections.

• 2.x

Norton Utilities (1983) 71 Utility Unix

The Norton Utilities is a suite of disk and system utilities designed to enhance system performance and stability. It started off as a set of disk utilities written by Peter Norton, and later was sold by Symantec. It competed against Central Point PC Tools and the Mace Utilities. In 2003, Norton Utilities was merged with Norton SystemWorks, but later split back out.

• For System V