CodeCanyon - Chat X v1.4 - WordPress Chat plugin for Sales & Support
CX uses Firebase for realtime platform to make your chat faster and reliable. That means CX doesn't use your own resources like other AJAX chats. Your all chat data stored on Firebase temporarily during chat communication. It makes your chat realtime! Besides, your data will be removed from Firebase and saved on your own server after ending chat. So you still keep your data in your server without using your server resources too much!