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 					<p>A collection of add-ons, custom actions, and filters that enhance the Todo.txt CLI script, authored by community members.</p>
 					<h4><a href="https://github.com/dertuxmalwieder/SublimeTodoTxt">Sublime Text todo.txt syntax highlighting</a></h4>
 					<p>by <a href="https://github.com/dertuxmalwieder">Cthulhux</a></p>
+					<h4><a href="https://addons.mozilla.org/en-US/thunderbird/addon/todotxt-extension/">Todo.txt Thunderbird Extension</a></h4>
+					<p>by <a href="https://github.com/rkokkelk/todo.txt-ext">Roy Kokkelkoren</a></p>
 				</div>
 				<div class="span3">
 					<h3>Mobile</h3>