- Overture (Quinlan at LLNL and Sussman)
- Handles overlapping grids (moving and static)
- Does adaptive mesh refinement (AMR++)
- Automatic domain decomposition for parallel computation
- Powerful Fortran90-like syntax for arithmetic operations, as well as differential operators
- Meta-Chaos (Sussman)
- Provides pipe for communication between parallel programs
- Works on structured and unstructured grids (including Overture codes)
- Inter-program communication within a parallel machine, or across a local or wide-area network
- Minimal changes to an existing parallel program, and doesn't change communication method within the program