Writing Components - Best practices for writing Mule components.

Standard Components - Components that ship with the Mule distribution.

Exception Strategies - How to customise Exception management for your components.

Interceptors - How to intercept the inbound and outbound event flow to a component to introduce new behaviour.

Transformers - Transformers available in Mule and how to write your own.

Endpoints - All you need to know about configuring Endpoints for your components.

Message Routers - A guide to configuring routing paths to and from components and external systems.

Filters - Can be used on endpoints and Routers, here is information about the filters provided by Mule and how to write your own.