MyFaces Commons Components contains non renderkit specific components and code that can be used with any jsf frameworks. It includes:

• <mc:renderOne> : A component that only renders the first child either by index or the first visible one.
• <mc:outputClientId> : Output the clientId of a component specified by for property.
• <mc:exporterActionListener> : very simple export to pdf or xls action listener.

And some facelet EL functions that comes in handy writing html/javascript/css mixtures:

• #{mc:findComponent(...)} UIComponent findComponent(java.lang.String)
• #{mc:findComponentFrom(...)} UIComponent findComponentFrom(javax.faces.component.UIComponent, java.lang.String)
• #{mc:outputClientId(...)} java.lang.String outputClientId(java.lang.String)