Hubble

Hubble

The best notepad for you and your agents—Markdown-backed, built for agents.

Hubble.md is a free, open‑source note‑taking platform that combines the simplicity of a personal notepad with the power of Markdown and HTML. Designed for both individual users and AI agents, it offers a Notion‑like writing experience while storing notes as plain Markdown files for easy versioning and portability. Users can organize content with tags, places, and custom views, and the web‑based interface supports rich media, maps, and field‑guide style layouts. Hubble.md is community‑driven, hosted on GitHub, and continuously expanded with new features and cross‑platform support.