Hello,
Welcome to our Microsoft Q&A platform!
Here are several choices that may helps you.
- Jamesmontemagno 's app-monkeychat with source code
https://github.com/jamesmontemagno/app-monkeychat - The solution includes more than 30+ features.
https://github.com/Doughouzlight/Xamarin_Forms_Wowonder-Messenger-v1.3 - XamChat of jamesmontemagno
https://github.com/jamesmontemagno/XamChat - FCM Chatting App
https://github.com/twilio/TwilioChatXamarinBindings
Best Regards,
Jessie Zhang
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