Cash is a shell written in C for Linux. As of now, it is rather minimal, and in the Alpha phase. It has tab completion, keeps a history file in the user's home directory, and has emacs-like line editing. More features will be added regularly.
CJSH is an experimental Unix/Linux commandline shell, implemented in Python, which offers Unix strength while taking advantage of some more recent concepts in terms of usability and searching above pinpointing files in hierarchies.