ethos
Just habits — cadence, completions, cues.
ethos is the habit half of the personal cloud, on its own: what you meant to do and how often, what you actually did, and the cue that should bring it up. It does not schedule anything — it feeds auto-cal, which does.
Early-stage. The scope is deliberately one thing.
Full documentation lives in the project README: https://github.com/cubicecho/ethos