Starcounter is a fusion of your C# VM and a ACID RAM DBMS

GopherLua: VM and compiler for Lua in Go

ECMAScript Lexer / Parser / Interpreter / VM / method JIT written in C++

An OS preconfigured for Asterisk, ready to use in a VM (or not).

VM using Docker for Geospatial Analysis

a multithreading concatenative stack-based language

A Ruby VM written in Go aims to exploit parallelism via Software Transactional Memory

PHP to JavaScript converter and VM written in JavaScript