there are a lot of bad answers here.
putting a shock collar on a barking dog is like smacking a piano student every time he hits a wrong note. it is a violent, abusive practice and while it might stop the dog from barking, it will also teach the dog to live in fear.
i feel that a muzzle is equally cruel, but i also have to point out that it only prevents biting, not barking.
the CORRECT way to prevent a dog from barking is to show the dog that she will not get what she wants when she barks. she barks when she’s excited, so try this. when you come home at the end fo the day, and she’s excited to see you, and she’s barking to show her happiness, do not look at her, pet her, greet her in any way until she stops barking. when she sees your strange behavior, she will start trying different approaches to get your attention. do not give in until she stops barking. the moment she’s really quiet, immediately praise her, pet her, love her in every way.
this will take a few days at minimum. do not expect her to stay quiet for long on the first day. instead, slowly work up to longer and longer periods of silence before you praise her.
will work like a charm, it you’re patient. and then you won’t be abusing your dog, and everyone will be happy.