Filter entries by entry type in the CP?
What you can do is to create additional entry sources using the modifyEntrySources hook.

This is a very simple example, that will add a heading and two sources to the end of the
sources list (below your default Singles, Channels and Structure sources).

public function modifyEntrySources(&amp;$sources, $context)
{
    $newSources = array(
        array('heading' =&gt; 'Post Formats'),
        array(
            'label' =&gt; 'Articles',
            'criteria' =&gt; array('section' =&gt; 'blog', 'type' =&gt; 'article')
        ),
        array(
            'label' =&gt; 'Links',
            'criteria' =&gt; array('section' =&gt; 'blog', 'type' =&gt; 'link')
        )
    );

    $sources = array_merge($sources, $newSources);
}


You could also get all entry types of a section with getEntryTypes() and add them programatically if you want.