Oxford Medical Education (www.oxfordmedicaleducation.com) provides free, online, open-access medical education for doctors and medical students. It covers the practical aspects of diagnosis, investigation and management at the level of a medical registrar or PACES candidate. All the contributors are GMC-registered doctors who have passed MRCP or MRCS. Their contribution is entirely voluntary and no profit is made by OME or its contributors.Although aimed at doctors and medical students in developed countries, the content is widely used in the developing world and we are forging links with international organisations to allow greater access to OME.