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     <li><a href="https://play.google.com/store/apps/details?id=eu.siacs.conversations">Conversations</a> - An open source Jabber/XMPP client for Android 4.4+ smartphones. Supports end-to-end encryption with either OMEMO or openPGP. There is also <a href="https://play.google.com/store/apps/details?id=eu.siacs.conversations.legacy">Conversations Legacy</a> which still supports OTR.</li>
     <li><a href="https://en.wikipedia.org/wiki/Off-the-Record_Messaging#Client_support">List of OTR Clients - Wikipedia</a></li>
     <li><a href="https://matrix.org/">The Matrix protocol</a> and it's various clients such as <a href="https://about.riot.im/">Riot.im</a>. A successor of XMPP.</li>
+    <li><a href="https://silence.im/">Silence</a> - SMS/MMS encrytion tool based on the Signal encryption protocol.</li>
 </ul>
 
 <h3>Related Information</h3>