Before HyperCard Bill Atkinson wrote Rolodex-like QuickFile in 1985. It supported organization of notes on sequential cards:
Image source: ISBN 3-528-15119-6
Asked in 1987 about where Atkinson got the idea for HyperCard
Actually, HyperCard is a descendant of two ideas. One was the
give-away Rolodex program that I wrote just to keep track of my own
journal articles. [the other was fast searching]
See also this interview from Oct 1987.
this program claims to read QuickFile files.
Before HyperCard Bill Atkinson wrote Rolodex-like QuickFile in 1985. It supported organization of notes on sequential cards:
Image source: ISBN 3-528-15119-6
Asked in 1987 about where Atkinson got the idea for HyperCard
See also this interview from Oct 1987.
this program claims to read QuickFile files.