The Palm Commandline Tools are a set of Perl scripts which make your
PalmOS PIM databases available on the command prompt. The package also
includes an [X]Emacs mode for Todos.
Sidebrain is a working-memory tool for
programmers: it maintains a stack of your current
tasks, a queue or pool of pending tasks, and a set
of observations, to help to remind you of what
you're doing.