There's a LOT of professional graphic software to design books, brochures, forms, advertisements and whatever you like, both for printing and for the web.
- Adobe is one of the leading manufacturers of such software.
- Our http://www.download.com/Graphic-Design-Software/ shows some examples.
- Microsoft offers Publisher: http://office.microsoft.com/en-us/publisher/default.aspx
But I think you forget to mention one essential requirement: it should be possible to interface with the administrative applications used by your customers. And that seems to make it a totally different question.
I work in accounting and usually require to design different formats (invoices, receipts, etc.) to adapt them to different customers.
Do not like what is included in administrative and accounting packages because forms are limited, usually rudimentary, and do not admit importing images, and other multimedia items.
I am interested in software specifically designed to modified a wide range of formats.
Would appreciate your recommendations.