Pausify is a free Chrome extension developed by hari.was.here. It falls under the category of Browsers and is a subcategory of Add-ons & Tools. With Pausify, you can easily pause and play videos and music in any browser tab.

The extension supports popular sites like Youtube, Pandora, Soundcloud, Spotify, and Rdio. It offers a convenient way to control your media playback without having to switch tabs or search for the pause button.

In version 1.5, Pausify added support for Rdio, in addition to its existing support for Youtube's HTML5 player. Version 1.4 introduced support for Spotify, while version 1.3 added support for Soundcloud. Pandora support was included in version 1.2.

Pausify offers multiple tab play/pause support in version 1.1, allowing you to control media playback across different tabs. It also fixed a bug that caused pausing of an already paused video. In version 1.0, the extension initially offered single tab pause/play functionality and supported Youtube.

Overall, Pausify is a useful Chrome extension for anyone who frequently consumes media online and wants easy control over playback without the hassle of switching tabs or searching for the pause button.