# Utilities
- _Registry_: The `Monolog\Registry` class lets you configure global loggers that you
can then statically access from anywhere. It is not really a best practice but can
help in some older codebases or for ease of use.
- _ErrorHandler_: The `Monolog\ErrorHandler` class allows you to easily register
a Logger instance as an exception handler, error handler or fatal error handler.
- _SignalHandler_: The `Monolog\SignalHandler` class allows you to easily register
a Logger instance as a POSIX signal handler.
- _ErrorLevelActivationStrategy_: Activates a FingersCrossedHandler when a certain log
level is reached.
- _ChannelLevelActivationStrategy_: Activates a FingersCrossedHandler when a certain
log level is reached, depending on which channel received the log record.
← [Handlers, Formatters and Processors](02-handlers-formatters-processors.md) | [Extending Monolog](04-extending.md) →