flatnotes

flatnotes is a distraction-free note-taking web app designed around a simple folder of Markdown files instead of a database. It focuses on fast capture and retrieval of notes while keeping your data portable and editable outside the app.

Key Features

• Stores notes as plain Markdown files in a flat directory (no database)
• Mobile-responsive web interface
• Raw Markdown and WYSIWYG editor modes
• Full-text search with an incrementally synced search index
• Tagging for organizing and filtering notes
• Wiki-style links between notes using double-bracket syntax
• Customizable home page and light/dark themes
• Multiple authentication modes including optional read-only mode and 2FA
• RESTful API for programmatic access

Use Cases

• Personal knowledge base where notes remain accessible as files
• Lightweight team or household notes/wiki with quick search and tagging
• Homelab note service integrated with scripts via the API

Limitations and Considerations

• Uses a flat folder model (no hierarchical notebooks/folders within the UI)
• Search relies on an index cache, which may need storage and occasional rebuilds for very large libraries

flatnotes is a good fit if you want a simple web UI for Markdown notes without lock-in, while retaining powerful search, tagging, and linking for day-to-day use.