Ah-tty is an automatic helper for command prompts and shells. It is primarily for novice shell users who would like (or need) feedback and advice about the command they are trying to use or want to use.
GemVt is the GNU Emulator of a Virtual Terminal for the X Window System written on top of the Gtk+ toolkit (much like rxvt).
A stock market application.
Software to build and execute shell command lines from standard input in parallel.