Add customtkinter in GUI

Author: jgujerry

index.html

@@ -3025,6 +3025,24 @@ <h3 class="text-center"><a href="https://github.com/urwid/urwid" target="_blank"
         </div>
       </div>
 
+      <div class="col-12 col-6 col-sm-6 col-lg-3 mb-4">
+        <div class="card">
+          <div class="card-body">
+            <a href="https://customtkinter.tomschimansky.com/" target="_blank">
+              <img class="card-img-top p-1" src="static/image/logos/custom-tkinter.png" style="width:100%; height:auto;" alt="CustomTkinter">
+            </a>
+            <p class="card-text mt-3"><small>
+              <b><a href="https://github.com/TomSchimansky/CustomTkinter" target="_blank">CustomTkinter: </a></b>
+              A modern and customizable python UI-library based on Tkinter.
+            </small></p>
+            <p class="card-text">
+              <a href="https://customtkinter.tomschimansky.com/documentation/" target="_blank">CustomTkinter</a>
+              is a python UI-library based on Tkinter, which provides new, modern and fully customizable widgets.
+            </p>
+          </div>
+        </div>
+      </div>
+
     </div>
     <!--End of GUI & GUI-->