I really like SonarQube and all the options it has to offer. If you want to see what SonarQube can do, you could either browse through all the documentation or even better, have a look at Nemo, the online instance of SonarQube dedicated to open source projects.
I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.