Lotus tried to re-think spreadsheets with a product called Improv - it was full of good ideas but the product never took off. The product launched on NeXTSTEP in 1991 and then on Windows in 1993.

Here's a 1990 sales video (low-resolution) from Lotus explaining how it works, and how it differs from traditional spreadsheets: https://www.youtube.com/watch?v=rgGmKD87U3M