I use Open Office for at least three hours every day-usually six.
When it's time to do taxes, the numbers are all there at the bottom. It calculates income, expenses, sales and income taxes etc. I do my company books with an Open Office spreadsheet that I designed myself. At a time when we are working more from home more, Open Office is a sensible alternative to expensive word processing, and spreadsheet programs.
The envelopes, formatted and printed in Open Office, are proper business envelopes. I write good business letters often for other people sometimes a printed letter gets more attention than an email.