Fireworkz (Colton Software)

Fireworkz combines the features of Wordz (a word processor that you can use to write letters, reports, books, invitations, shopping lists, schedules and other documents) and Resultz (a spreadsheet that you can use to perform calculations, analyse figures, and produce colourful charts) enabling you to do even more; incorporate live results in your reports, or perform an automatic mail-merge to your friends or customers.

If you are using Microsoft® Windows®, Linux or macOS, and don't know what RISC OS is, you may be better off using LibreOffice!