There are 1 repository under preroll topic.
A Tool for Building Video.js Ad Plugins
Google IMA HTML5 preroll ad plugin for Clappr player
Schedule Plex Pre-Roll listings
A program to help organize and run your Home Theater with a practically easy-to-use GUI!
Ads Player vast/vpaid supported, preRoll, midRoll, postRoll, premium features available, more features coming soon, open source html5 video player.