This is a working memory tool for programmers: it maintains a stack of your current tasks, and a queue or pool of pending tasks, and a set of observations, to help to remind you what you're doing. This is a fairly new project; for what I can tell so far, it helps me to keep focused on what I'm doing.
You can read the manual, which is also available as an info file within the downloaded package.
This research has been supported by the Science Foundation Ireland Investigator Programme, B4-STEP (Building a Bi-Directional Bridge Between Software ThEory and Practice).