Nitin Yawalkar

RDFa Breadcrumb provide links back to each previous page the user navigated through to get to the current page or – in hierarchical site structures – the parent pages of the current one.
It gives you a new template tag called <code>rdfa_breadcrumb()</code> that you can place anywhere in your template files. It has inbuilt RDFa content markup, so this will help Google to recognize and display the breadcrumbs on search results as well.
Check out the screenshots.

RDFa Breadcrumb

An easy template tag for showing a breadcrumb menu on your site and on google search results with built in RDFa Markup.

nablasol

Breadcrumbs is a website navigation technique. With the help of breadcrumbs a user can see where the current page is in relation to the website’s hierarchy.
It allows the user to retrace their steps.
With the help of this plugin you can display breadcrumbs on your wordpress pages, posts, archives and any other pages supported by your WordPress theme.

WPshore Breadcrumbs

An easy-to-use template tag for showing a breadcrumb menu on your site.

RDFa Breadcrumb vs WPshore Breadcrumbs