I'm getting ready to do a thorough makeover on a huge user guide / online help project in FrameMaker 10.
One of the things I plan to do is simplify and standardize the paragraph and character tags so they will map cleanly to Confluence 4.x XHTML. Silicon Prairie's Character Tools and Paragraph Tools look like they'd do what I need and they're only $20. Anything else free or cheap I should look at?