A small shell written in c which runs on POSIX compliant systems. Support for commandline history (readline + termcap/ncurses) if present. Intended on systems that don't need the "hugeness" of e.g. bash
uniread - universal readline - adds full readline support (command editing, history, etc.) to any existing interactive command-line program. Common examples are Oracle's sqlplus or jython.
uniread will work on any POSIX platform with Perl.