dbl.el: mode for source level debugging lisp much like the authors gdb.el gcl.el: mode for interacting with gcl sshell.el: old fashioned shell mode, used by dbl.el. lisp-complete.el: a history mechanism based on the prompt.
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.