Lucid 3-D (1988) 0 Spreadsheet Windows

Lucid 3-D, created by PCSG, Inc. and sold by DacEasy, Inc., is a spreadsheet program for MS-DOS. The feature that sets it apart from others is that it is memory-resident, so you can bring it up on top of other DOS programs and exchange data with them. Unlike simple TSRs, however, Ludid 3D is a full featured spreadsheet. It features linking, macros, windowing, intelligent recalculation, background recalculation, and user-definable functions.

• 1.x (Win)

Rapid: File Manager (1994) 1 Utility Windows

Rapid: File Manager is a Windows based file manager from Gazelle Systems, the makers of Q-DOS.

• 1.0

Sidekick (1984) 15 Utility PIM OS2 Windows

Borland Sidekick is a DOS based PIM (Personal Information Manager) and one of the first widely-used TSR (terminate and stay resident) programs. The key feature of Sidekick was that one could use Sidekick's utilities while using most other MS-DOS applications. This was important because MS-DOS had no built-in multi-tasking or task switching capabilities.

• 1.0 for OS/2
• 1.0 for Windows
• 2.0 for Windows