I am a bit frustrated because I cannot find any dofollow forums and blogs, I searched google and I found lists but whenever I check those sites they are nofollow. Is there any software out there that someone can recommend that can scan to find dofollow forums and blogs within certain topics? Not trying to spam but would like to post in places were I can get backlinks from as well.

I checked my competitors their backlinks come from non-relevant websites that are basically part of farms.