Borland Sidekick Plus 1.00a
Released in 1988 by Borland
For DOS

Sidekick is a DOS based PIM (Personal Information Manager) and one of
the first widely-used TSR (terminate and stay resident) programs.

Sidekick Plus is an extended version of the original Sidekick 1.x
product, with many additional application features. It includes a
PhoneBook, Time Planner, Notepad, Clipboard, Outline Processor,
Calculator, File Manager, and ASCII copy-paste table.

This archive contains three 3.5" 720k floppy disk images. 

DISK01 - Install
DISK02 - Config
DISK03 - Examples & Help