If you find monthly fees off-putting with live chat plugins, look no further than the Live Chat Unlimited. It’s available from CodeCanyon for a fee of $75.
Chats are handled entirely from the WordPress dashboard – ideal if you spend most of the day logged in. The chat boxes are simple but effective, with two colors for you to customize.
You can handle an unlimited number of conversations at any given time, plus multiple operators can respond to the same query. If all operators are offline, the chat box is replaced by a contact form, so that visitors can email their questions directly.