Bshell
Bshell is the core component of Baan application server. It is a process virtual machine to run Baan 4GL language. Bshell were ported to different server platforms and make Baan program scripts platform independent. For example, a Baan session developed on Windows platform can be copied to Linux platform without re-compiling the application code. Bshell is similar to nowaday's Java VM or .Net CLR.
Read more about this topic: Baan Corporation, Baan Virtual Machine