Faster Video - Allows manipulation of the playback rate of HTML5 videos
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Streamkeys - Global hotkeys for your favourite music players.
foobar2000 - An advanced freeware audio player for the Windows platform.
Saima - AI-based browser extension for personalized adaptive video speed.
Winamp - Winamp is a media player that allows users to play multiple-file formats, arrange media in a varied file-management system, and play unique media with AAC encoding.