| SwiftMailer |
| Twig |
| CacheCacheCollector | Collects CacheCache operations |
| DoctrineCollector | Collects Doctrine queries |
| MonologCollector | A monolog handler as well as a data collector |
| Propel2Collector | A Propel logger which acts as a data collector |
| PropelCollector | A Propel logger which acts as a data collector |
| SlimCollector | Collects messages from a Slim logger |