**SOFTWARE GRAFICA**

  * https://www.xnview.com XnViewMP Image Viewer & Resizer
  * https://www.faststone.org FastStone Image Viewer

**ONLINE EDITOR**

  * https://www.photopea.com/ Photopea +++
  * https://www.drawio.com/
  * https://online.visual-paradigm.com/ - Editor schemi rete & rack
  * https://cloud.smartdraw.com