Clara.io

Clara.io is a web-based freemium 3D computer graphics software developed by Exocortex, a Canadian software company. Clara.io was announced in July 2013 and first presented as part of the official SIGGRAPH 2013 program later that month. By November 2013 when the open beta period started, Clara.io had 14,000 registered users. Clara.io claimed to have 26,000 registered users in January 2014, which grew to 85,000 by December 2014.
Technology.
Clara.io is developed using HTML5, JavaScript, WebGL and Three.js. Clara.io does not rely on any browser plugins and thus runs on any platform that has a modern standards compliant browser.