Multisite shared Menu - Is there any option available?

Hi, I'm looking for a top Menu in which all the site within the network would be listed and/or I could also customise other entries. I've been researching on the web and the only option I found didn't work and had absolutely no documentation about how to configure (besides that it's a solution from 2013)...All other options and discussions I've found about it were from before year 2013 (ancient times when talking about wordpress)...Any solution within the WPMU plugins or any other source?

Regards,
Marco