Scribus can do a lot of what Acrobat can do when it comes to creating PDFs. I don't know if it does Reviewing and Commenting, though. Adobe Reader 8 for Linux does allow for comments (toolbar not installed by default, but available), but the permissions for those have to be set in the PDF. Reader can't change them. I don't know if Scribus can set or change permissions.
I just checked just now and there is a Scribus setting under Export, Save as PDF, Security, Use Encryption, Allow Adding Annotations and Fields. I haven't tried any of these, but you may find they do what you want IF you create the document in Scribus. I don't think you can open a PDF created with something else and change these settings.
Scribus is available for both Linux and Windows.
There is also a set of tools called pdftk that can do all sorts of things. From the project page at freshmeat.net:
"Pdftk is a simple command line tool for doing everyday things with PDF documents. Use it to merge PDF documents, split PDF pages into a new document, decrypt input as necessary (password required), encrypt output as desired, fill PDF forms with FDF data and/or flatten forms, apply a background watermark, report on PDF metrics, update PDF metadata, attach files to PDF pages or the PDF document, unpack PDF attachments, burst a PDF document into single pages, decompress and re-compress page streams, and repair corrupted PDF files (where possible)."