I analyse my Symfony applications using SensioLabsInsight. The reports I receive are not always useful, but many point to various problems that should be considered. SensioLabInsight integrates with GitHub so you can get an analysis with each commit without doing anything. That’s definitely a nice feature. One of the errors I had from the beginning was a critical error “Dependencies not installable”. The problem is caused by a “Connection refused” error that had not much to do with my code.