Revert "Remove Tox recommendation (#575)"

index.html

@@ -641,6 +641,14 @@ <h3>Block Content Delivery Networks with "Decentraleyes"</h3>
     <br />
     <a href="https://addons.mozilla.org/firefox/addon/decentraleyes/">https://addons.mozilla.org/firefox/addon/decentraleyes/</a></p>
 
+<h3>Redirect AMP to HTML</h3>
+<img src="assets/img/addons/amp2html.png" class="img-fluid float-left" alt="AMP2HTML" style="margin-right:30px;">
+<p><a href="https://www.ctrl.blog/entry/amp2html-extension">Protect the decentralized nature of internet websites</a> by using <a href="https://www.daniel.priv.no/web-extensions/amp2html">Redirect AMP to HTML</a> instead allowing it to be controlled under just a few AMP Caches (Google, Bing etc).
+    <br />
+<i>Source code: <a href="https://github.com/da2x/amp2html">at Github</a>.</i>
+    <br />
+    <a href="https://addons.mozilla.org/firefox/addon/amp2html">https://addons.mozilla.org/firefox/addon/amp2html/</a></p>
+</p>
 <br>
 
 <div class="alert alert-warning" role="alert">
@@ -1323,6 +1331,7 @@ <h1 id="voip" class="anchor"><a href="#voip"><i class="fas fa-link anchor-icon">
 <h3>Worth Mentioning</h3>
 <ul>
     <li><a href="https://jitsi.org/">Jitsi</a> - Jitsi is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application.</li>
+    <li><a href="https://tox.chat/">Tox</a> - A free and open-source, peer-to-peer, encrypted instant messaging and video calling software.</li>
     <li><a href="http://www.ring.cx/">Ring (formerly SFLphone)</a> - Gives you a full control over your communications and an unmatched level of privacy.</li>
 </ul>