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A browser-based knowledge base built from Markdown notes, links, and a navigable graph.

An AI workspace that captures notes, meetings, and research and helps surface useful context.

An iPhone voice-note inbox that transcribes, tags, and dates captures for later search.

Store notes and files in an encrypted notebook that syncs across devices.

An Android notepad for colored text memos, checklists, reminders, and calendar notes.

A simple free desktop notebook with safe saves, version history, folders, and a focus mode.

Arrange notes and long-form writing in nested books that can grow into projects.

Save notes, links, and images as cards and revisit them through search and reflective prompts.

A free Markdown writing workspace with live preview, local files, and exports.

Capture notes and reminders on an infinite idea canvas connected to Gmail, Calendar, and Drive.

A native Markdown notebook that adds linked notes, task lists, Kanban, and optional AI tools.

A mobile note-taking app that combines handwriting, AI-assisted notes, and live whiteboards.

A distraction-free Markdown editor for writing notes as readable documents.

A freeware Windows notebook for formatted notes, spreadsheets, diagrams, and personal information.

An open-source academic notebook that brings Markdown notes, PDF annotations, and literature management together.

Self-organizing notes with AI, voice, and meeting capture.

A free, open-source Markdown editor for research notes and long-form writing.

An open-source desktop notebook for stylus handwriting, PDF markup, layers, and audio notes.

A local-first desktop notebook that stores Markdown notes and canvases on the user’s computer.

Build a hierarchical personal knowledge base locally or on a self-hosted server.

A distraction-free Markdown editor for local notes on Windows, macOS, and Linux.

Note taking tool with flashcards, PDF annotation, and AI study features

Keep rich-text or code notes in a hierarchical tree stored in a single database or file collection.

Edit Markdown notes and todo.txt lists in a lightweight Android text editor.