At first popcorninyourbrowser was up for about a week and then it was taken down. It was meant as an experiment and the backend couldn’t withstand the enormous interest the service got.
It’s recently popped back up with a slightly different configuration and can yet again be used to stream torrents directly in the browser and thus without the need for a program or an app.
Popcorninyourbrowser lacks some of the fancier features of “real” Popcorn Time programs such as Chromecast and AirPlay playback but does support subtitles and works excellently for playing videos in the browser. Sadly, it doesn’t play TV-shows so users will have to make do with movies for the time being.