Add OpenMCx to tools

Author: klausschuch

content/tools.html

@@ -80,5 +80,13 @@ <h2>Tools that support SSP</h2>
       <td>yes</td>
       <td>yes</td>
     </tr>
+    <tr>
+      <td><a href="https://github.com/eclipse/openmcx">OpenMCx</a></td>
+      <td><a href="http://eclipse.org">Eclipse Foundation</a></td>
+      <td>OpenMCx is an extendable, tool-neutral co-simulation framework based on <a href="https://modelica.org/association">Modelica Association Standards</a>.</td>
+      <td>free</td>
+      <td>yes</td>
+      <td>no</td>
+    </tr>
   </tbody>
-</table>
+</table>