Open Source
DayWatch
Open-source cross-platform tray app that reads time-blocked markdown plans and sends native task-switch notifications (Python, MIT)
About
A cross-platform tray app that reads time-blocked markdown plans and sends a native notification when it's time to switch tasks. Plans stay plain markdown, so it works with Obsidian, any editor, or none at all. Ships as a standalone binary for macOS, Linux, and Windows.
Built with
Python
CLI
Markdown
MIT
The story
I Built a Closed-Loop AI Planning System With Claude, Obsidian, and 800 Lines of Python
April 04, 2026