The Virtual Object System (VOS) is a computer software technology for creating distributed object systems. The sites hosting Vobjects are typically linked by a computer network, such as a local area network or the Internet. Vobjects may send messages to other Vobjects over these network links (remotely) or within the same host site (locally) to perform actions and synchronize state. In this way, VOS may also be called an object-oriented remote procedure call system.