A long time ago, I frequently used a small X11 utility that allows you to manage multiple systems at the same time.

It worked by opening a small window that had a button you used to "Add" X Clients to it. These would be xterms on different systems for example.

You would then type inside that small window and all keystrokes would be sent to all registered xterms.

This was a real time saver when setiing up multiple systems when writing a script was not worth the trouble.

I can't seem to find it anywhere. I wish I remembered the name but I don't.

Anyone have any clue as what I'm talking about?