Is there any resource (blog or website) where one can find all communication related to any published scientific paper? For example I found some advise on how to write a "rebuttal letters" but not a "real life" rebuttal letter. Same is true for cover letter or reviewers comment. Is there any open-access journal which make everything public (or any researcher have done so)?
It might highly depend on your field of research... But here is a list of tools / resources that can help you track all the documents associated with a paper:
Pubpeer is a platform for post-reviewing about any published papers
I hope it helps!