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Read scientific PDFs and export your notes on Mac

Google's reading practice with a reading buddy that assists pronunciation as children read aloud.

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

A free, open-source notebook for organizing notes in the browser or on desktop.

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

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.

Keep quick Markdown memos on infrastructure you choose and retrieve them through search.

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.

Revisit and organize highlights from your reading

Buy ebooks with browser and downloadable reading routes

Organize research notes, themes and key insights

A local-first Markdown reader, editor, and notebook that keeps documents as plain files on your device.

Ebooks and audiobooks inside Apple’s reading app

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.

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

Receive and read books delivered through BookFunnel

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

A private Markdown second brain that also supports shared, searchable company knowledge.