As of today we also support the operating system Linux. Although Tom's Planner itself is not open source and from a business point of view it doesn't make a lot of sense to make the effort we still think it just a good thing to do. Also we take pride in the fact that Tom's Planner works so well cross platform and cross browser. We will test our website and all new features regularly on the most recent release of Ubuntu using the browsers Firefox and Google Chrome. If you are a Linux user and you find any irregularity be sure to let us know! Support for Android and the Opera browser is next on the agenda.