O3 is a modern web application that uses some of the newest capabilities of HTML, CSS, and JavaScript. Therefore, O3 is developed and tested for compatibility with the latest versions of:

** In 2015 Microsoft released Edge as the browser to supersede Internet Explorer (IE). Since then IE has not received major updates or added support for modern web standards. Microsoft recently discouraged the use of Internet Explorer as a default browser, and characterizes IE as a solution for backward compatibility. To allow us to continue to take advantage of modern web standards to deliver improved functionality and the best possible user experience, we do not support IE11.