Pretty Good

Pretty excellent option for integrating Messenger into OS X. However, it’s missing out on a pretty critical feature: it doesn’t support pasting images inline. This is nearly a deal breaker for me, as I’m constantly sending screenshots and other images from my clipboard. If they add support for that, it’ll be an instant 5-star app for me. Until then, I don’t think it’s worth the money.

JayHankins about Chatty for Facebook Messenger, v2.0