Dana Ross

Widget that displays on your WordPress search results page with similar items from your Flickr, YouTube, and Twitter feeds.
For example, someone searching for “cat” on your site might see Flickr photos you’ve tagged with “cat”, or that funny YouTube video you took of your kitty the other day.
Currently searches: * Flickr * Twitter * YouTube
…or any combination of the above!
View the announcement for this plugin at http://www.slideshare.net/fvcp/wpexternalsearch

Dave’s External Search

Widget that displays on your WordPress search results page with similar items from your Flickr, YouTube, and Twitter feeds.

yu-ji

hiddentao

WordPress Flickr Embed is a WordPress plugin that provides an interactive interface for adding Flickr images to your posts. The interface is conveniently launched from the visual editor toolbar.
This is a fork of the (https://wordpress.org/extend/plugins/wordpress-media-flickr/) plugin for WordPress and provides numerous bug fixes and enhancements over the original.
<h4>Features</h4>
<ul>
<li>Search for an select any public photo or a private one from your photostream (requires Flickr authorization).</li>
<li>Sort search results by date taken or date posted</li>
<li>Insert a photo anywhere in your post, choosing its title, size and how it should be aligned to the text.</li>
<li>Link the photo back to its Flickr page or to a different-sized version of itself.</li>
<li>Supports Lightbox and Lightview popups.</li>
</ul>
Source on Github: https://github.com/hiddentao/wp-flickr-embed
Note: This plugin requires PHP 5.2.

WordPress Flickr Embed

Wordpress Flickr Embed is a Wordpress plugin that provides an interactive interface for adding Flickr images to your posts.

Dave’s External Search vs WordPress Flickr Embed