REV 2009 is the sixth in a series of annual events addressing the area of remote engineering and virtual instrumentation. Previous editions of REV were organized in the form of an international symposium, and evolved in 2007 to be the annual conference of the International Association of Online Engineering. The general objective of this conference is to discuss fundamentals, applications and experiences within the field of online engineering, both in industry and academia. REV 2009 offers an exciting technical program as well as academic networking opportunities during the social events.