Google has also dofollow blog finding search engine . You can find on google you will get actual results.
It would be difficult to find a list of do follow blogs these days to comment on. Most blogst, if not all, are no follow, as are forums, thanks to spam. I suggest you look up forums and blogs that are related to your site or within your niche and participate in those, do follow or not. You will still be able to build backlinks from those and get traffic as well. Hope that helps. Have a good day!