apex:relatedList

A list of Salesforce records that are related to a parent record with a lookup or master-detail relationship.
<apex:page standardController="Account">
    <apex:pageBlock>
        You're looking at some related list of--->{!account.name}:
        <apex:relatedList list="Opportunities" />
        <apex:relatedList list="Contacts"/>
        <apex:relatedList list="Cases"  />
    </apex:pageBlock>
</apex:page>


Special Note:
           apex:relatedList' component cannot be nested within form tags