Ranked in these QuestionsQuestion Ranking
Pro Detailed setup instructions for a wide variety of OSs
Duck DNS includes step by step instructions on how to set up their service on a wide variety of operating systems. There even are instruction on how to set it up on raspberry pi, mikrotik routers, tomatoUSB as well as multiple ways for Linux, Windows and OSX.
Con Lacks advanced functionality
In an effort to focus on simplicity, Duck DNS lacks features such as custom domains, url or port forwarding and uses just 1 domain.