jPlayer is an open-source, cross-platform media player library written in JavaScript that allows developers to easily embed and control audio and video playback within web pages using HTML5 and Flash. It offers a wide range of options for customization and has extensive support for media formats and codecs.
Plyr.io is a JavaScript library that enables HTML5 media playback with customizable controls. It supports various media formats and provides APIs for developers to build their own media players.