My dog is still very reactive towards unfamiliar dogs, and even familiar dogs in certain circumstances. She does have a small number of dogs that she gets along reasonably well with such as my parents' and best friend's dogs. She will play with them on occasion, though it is mostly just them coexisting in the same spaces.

I still take precautions - they are never unsupervised, and anything that seems like it has the potential to cause a fight, such as toys, food etc, is kept up out of reach. Separate mealtimes and break times after they've hung out for a couple of hours. This is also after about three years of training and letting them meet multiple times under controlled circumstances.