OpenEd.io has seen a steady stream of updates. The latest update offers support for public courses. Any course that you create using the Common Core-aligned resources in OpenEd.io can be shared publicly. This update should create a larger pool of shared resources for teachers and students.
As a registered OpenEd user (registration is free and takes less than thirty seconds to complete) you can create courses and playlists of videos and other materials that you find in the OpenEd directory. You can align your courses and playlists to Common Core standards. If you choose to align your course to a standard, OpenEd will suggest materials to you. OpenEd supports inclusion of assessments within your course.
Applications for Education
My favorite aspect of OpenEd.io is the search tool. Rather than searching and hoping to find a video on YouTube that matches the standard(s) you're addressing in a lesson, you can start with the standard and have OpenEd locate videos for you.
OpenEd.io offers iPad and Android apps that your students can use to access your courses and assessments.