Pushbullet is a productivity tool that allows users to connect their devices, such as smartphones and computers, for seamless communication. It enables users to share links, files, and notifications across devices, making it easier to stay organized and informed. With Pushbullet, users can receive phone notifications on their computers, respond to messages, and even send files without needing to switch devices. This integration enhances multitasking and helps users manage their tasks more efficiently, streamlining their digital experience.