Indispensible, have used it for years.
Only one flaw: Does not sync settings across devices. Only minor, but would be nice.

How do you run/activate other addon by using "Send message to other add-on"?

In Github there are 3 example but none show how to just run addon.

Simply amazing. Just a small flaw: would it be possible to have a command to find text on the page (Ctrl+F)?

pretty good，very convient！

отличное расширение, быстро привыкаешь

以前竟然不知道有這麼好用的東西，真是太感謝作者了

I've used this extension since its early days. I'd tried others, but this has evolved a better interface and is, by far, the most powerful, allowing stacking commands in a single gesture (if one fails, it goes to the next in the stack.) It also allows interaction with other extensions (which I'm still trying to figure out...)