Versal is an open publishing platform designed to transform online learning from passive presentations into interactive online educational experiences, without requiring coding experience. Using the Versal platform, teachers and subject matter experts can share their knowledge using a creation canvas, gadget architecture, open APIs, and flexible embedding options. Versal provides a simple iframe/postMessage-based API for building interactive learning applications which are called gadgets. Developers use HTML5/JS/CSS to create gadgets which are then hosted on the platform and configured by teachers for learners to interact with. The set of services include persistence, asset uploading/transcoding, and assessment.