Source : Free On-Line Dictionary of Computing

Valencia Simple Tasker
     
         (VSTa) A small {microkernel} based
        {Unix}-like {operating system}, taking ideas from {QNX} and
        {Plan 9}, available under {GPL}.
     
        {Home (http://www.chat.net/~jeske/VSTa/)}.
     
        (1999-03-03)