Lumen

Overview

Lumen is a minimalist macOS productivity app that combines notes, tasks, and AI assistance in a single markdown-based workspace. Features a self-healing todo list that AI organizes based on your defined structure (GTD-compatible), an inbox processor with AI-suggested categorization, and a full markdown editor with note hyperlinks and backlinks. Capture meeting audio with automatic notes and action item extraction, paste content from any app into AI chat for summarization, and build a custom prompt library with personal context. Uses plain markdown files stored locally with no platform lock-in, compatible with existing Obsidian vaults.

Architecture: Apple Silicon, Intel

Key Features

• Self-healing AI-organized todo list with GTD-compatible structure
• Inbox processing with AI-suggested categorization and diff-view review
• Full markdown editor with note hyperlinks and backlinks
• Meeting audio capture with automatic notes and action item extraction
• Cmd+H to paste content from any app into AI chat for summarization or drafting
• Custom prompt library with personal context
• Plain markdown files with no platform lock-in
• Compatible with existing Obsidian vaults
• API keys encrypted locally on device, no registration required

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