third-party or Frame tools for doc review/collaboration

[Vivek Jain]

If you are using FrameMaker 8, you can use "Track Text Edits" for review
purposes. This of course assumes that reviewer also has a copy of
FrameMaker 8 and you can trust the reviewer with the source files.  

For review of the final output, PDF based commenting is probably the
best bet. You may also want to check the "Merge Comments" functionality
in Acrobat when you send the PDF out to multiple reviewers.  

Thanks and regards
Vivek Jain