Somewhere between 5.0 and 5.0.3 ClarisWorks became AppleWorks.

I think I remember *Works of that era being better than MS Office in Mac compatibility. Problem is if you're using it to edit documents meant to be usable on modern day office packages, is it even possible?

AFAIK Office still supports loading of Office 4.2/Word 6 documents. Don't think I've seen anything loading ClarisWorks documents (not that I've looked/tried).