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iPhone money notebooks organized by folders, people and tags

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

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

A handwritten notebook for Apple Pencil notes, PDF markup, study tools, and creative pages.

Notebook-based symbolic and numerical computation

A local Markdown notebook that turns notes into links, tasks, and searchable topics.

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

A self-hosted Markdown notebook with collaboration, search, and note history.

An Android outliner for Org-mode notebooks, nested notes, tags, and manually synchronized files.

Work with notebooks, code files, consoles, and terminals in a browser-based interactive development environment.

An AI notebook that checks facts, links related ideas, and helps keep notes current.

An open-source iPad notebook for Apple Pencil writing and PDF markup.

A shareable infinite drawing board for handwriting, tutoring, diagrams, and PDF markup.

An open-source notebook for multimedia notes, attachments, and personal reference material.

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

Proxima Nova, original display fonts and the free Anonymous Pro coding family.

A local-first team notebook for real-time collaboration on plain Markdown files.

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

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

An Android handwriting workspace with notebooks, PDF markup, sticky notes, and corkboards.

AI research partner that answers from the sources you add

A private research notebook that runs entirely on your own machine.

A workout notebook with exercise history and progress views

Deploy lifelike Digital Workers and build custom AI agents