ArchC is an open-source architecture description language based on SystemC. Its goal is to provide designers with a tool to evaluate new ideas in processor and ISA design, memory hierarchy, etc. and other aspects of computer architecture research.
qsh is a shell for any operating system. It is coded in java so it inherits the pros and cons of java. It is in a very nascent stage, but all the regular commands work: Directory navigation, file tasks etc.