PiPButton is a Safari extension to play videos in Picture in Picture using a toolbar button
Safari extensions only work in Safari. They don't work in Google Chrome, Firefox, etc. The toolbar button will not appear if there are more than 2 Safari extensions enabled at the same time
In-app purchases have been removed
App rebranding and new icon
Bug fixes and performance improvements
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Miralos: Very Fast Web Browser 
StopButton 