Drillster is a young and innovative e-learning company that has developed an online service that helps users gain, maintain and test knowledge. Drillster is unique because it focuses on continuous and “sustainable” learning and keeping proficiency levels up-to-date at all times. The aim is to objectively ascertain the user’s real proficiency at any given point in time. This makes Drillster especially useful for compliance training for companies and in education for almost every level and field. Drillster is used by companies, educational publishers, schools, training institutes and by individual users in an open community.