Filter entries by entry type in the CP? We have a channel called Articles with multiple entry types. Is it possible to filter the entries within Craft (on the Entries page) by entry type?
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.