A barebone to-do list or memopad for your mind, and little bit for your friends'.
No calendar, no alarm, no importance, no whatever other than the thing.
Your stack understands markdown just like your mind.
You can add things to your friends' mindstack, like "buy me a beer tonight".
Yes, we do have more than just things. You can manage your stack like real stack; push, pop and roll them!
No public license is considered to this project at this point