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Turn simple HTML and Markdown into PDF, EPUB, or PostScript

Document processing that turns files and web pages into Markdown or structured JSON for AI systems.

Flag potentially unequal phrasing in text

A file-based knowledge app with a block editor, databases, workspaces, and live collaboration.

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

Write naturally by hand and add PDF pages to notes for markup.

A local-first knowledge notebook that combines text, handwriting, boards, and linked notes.

A zoomable handwriting and planning notebook with sub-pages and document annotation.

An infinite canvas for notes, images, links, to-dos, and nested visual boards.

A notebook app for Mac, iPad, and iPhone with hierarchical pages, handwriting, and cloud sync.

A local-first personal knowledge workspace for private notes, linked objects, and databases.

Organize research notes, themes and key insights

AI note taker that turns lectures and uploads into notes, transcripts and study materials.

Manage health-practice calendars, patient booking, billing, notes, and workflows in one system.

Collaborate on an online canvas with sticky notes, drawing tools, comments, timers, and board templates.

Keep direct and group conversations in context with channels, threads, reactions, and voice notes.

Read study PDFs and make notes as part of one annotation workflow.

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

A connected note system with rich-text editing, hubs, collections, and built-in journaling.

Capture thoughts as different kinds of note cards, from text to sketches and audio.

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

An iPhone and iPad notebook for handwriting, PDF markup, audio notes, and searchable study material.

AI note taker that turns voice, audio, video and text into structured notes.

Handwritten notes with live audio transcription and AI study tools