Jainja is a JVM (Java Virtual Machine) written in Java
A register-based virtual machine designed to be embeddable.
gasVM is a 32-bit, register-based virtual machine that has been designed to support a game that the author has undertaken for the development of a game for a game Competition, "Gary's Adventure of Science!" It is designed so that it may one day be implemented and hardware, and is designed to be a RISC machine. While this VM is designed for a single game, it is hoped that it will be useful for others who are looking for a virtual machine platform to embed within their software.