Lumen AI is described as 'Minimalist productivity system combining tasks, notes, and ideas in a unified Markdown workspace, with AI-driven organization, summaries, and inbox processing' and is a Note-taking tool in the office & productivity category. There are more than 50 alternatives to Lumen AI for a variety of platforms, including Mac, Windows, Linux, Android and iPhone apps. The best Lumen AI alternative is Obsidian, which is free. Other great apps like Lumen AI are Joplin, Logseq, Anytype and Notion.
Keep your personal notes truly private with MyEncryptedNotes — a fast, lightweight, and fully offline encrypted notepad for Windows. All data is protected locally using ChaCha20-Poly1305 encryption, ensuring modern, high-performance security without cloud dependencies.
You search in plain English like: “that pdf about startup taxes” or “the image with a blue landing page” or just a text inside one of the PDFs and it pulls it up. Everything is 100% local, nothing leaves your pc.
The trusted, encrypted alternative to Notion, Trello, and Miro. A fast, private knowledge base for developers, founders, and power users who need to store and retrieve information without friction — encrypted, searchable, and offline-ready.
Ideon is an open-source, self-hosted alternative to tools like Heptabase and Kosmik, specifically designed for technical projects. It provides an infinite spatial canvas where users can organize information visually rather than in linear documents or folder structures.
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