You could do this without 3rd party software with an Excel solution.
Place some kind of field to indicate the start and end of each page in your Crystal report, put this in a column where there's no other fields - you could even work this so it will name each tab whatever you want (a crystal groupname for instance).
Create a macro that loops through each row in Excel searching for the "New Page" "End page" flags in the relevant column and then copy/pastes that data into a new tab.
Not really the place to discuss Excel/Macros but if you're not familiar with them I can assist you further.
Regards,
Ryan.