No specific info about version 4.0. Please visit the main page of Pushbullet on Mac Informer.
iMessage lets you send messages to anyone on a Mac, or an iPhone, iPad, or iPod touch running iOS 5.
Say “hello” with an instant message, voice or video call – all for free.
Send messages, exchange files, and make voice and video calls.
Allows you to communicate and share files with others.
An unofficial and privacy-focused Facebook Messenger application.