Triangle is three programs in one - a word processor, spreadsheet and database, all for £19.95. It's undoubtably the best value package of its type I've ever seen.
As I worked my way around it, I was continually amazed at the power of the programs and their ease of use. There were even pop-up "help" windows at the touch of the F8 key when I wasn't certain.
These three programs, plus a menu/loader program and the help files come on one disc. Whilst the three are separate, they are designed so that data from one can be used in another. For example, names and addresses from the database put onto a letter in the wordprocessor, or data on stock into a balance sheet or order form. It's a bit involved, but it can be done.
The word processor and spreadsheet are both extremely powerful, both easy to get started on but it may take a while to learn all the keystrokes to use them to the full. The database is slightly more basic, for example it limits you to a maximum of 17 fields, each up to 29 characters, but such that the whole record is under 231 characters. Nevertheless it will satisfy most home-computing needs.
The disc comes with a very clear and easy to follow 14 page manual. If you've been wondering about turning your C64 from a games computer into useful office equipment, all you need is a printer and Triangle.