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An Android-first notebook for handwriting, PDF markup, voice notes, and optional web sync.

A free, local-first Markdown notebook for macOS and Windows.

A browser-installable notes app that stores Markdown files in the user’s Google Drive or Dropbox.

A local Markdown notebook that maps the path between connected ideas.

A desktop note environment for Markdown, source files, mind maps, PDFs, and other formats.

A free Markdown notebook that stores notes as ordinary files and offers optional encrypted sync.

A Windows note organizer with hierarchical notebooks, varied note types, and full-text retrieval.

A local-first Markdown notebook with daily notes, history, and optional private sync.

An introduction to computer programming from Waterloo

A handwriting notebook with note-linked audio, handwriting recognition, and PDF annotation.

A browser-installed notebook for handwriting, PDF markup, and recorded lectures that works offline.

Visual workflow automation with code and AI for technical teams

A cross-device notebook with folders, tags, linked notes, search, and offline synchronization.

Keep notes, scribbles, images, videos, and web clips together on a visual canvas for Mac.

Author, curate, search, and analyze knowledge assets across an enterprise.

Project-based programming study in a JetBrains workflow

Study software design by rebuilding familiar tools in Python

Workout planning and logging with set notes and charts

Render HTML and CSS into PDF from a command line or Python

A Python file server with resumable browser transfers

AI localization SDK for React, Next.js, React Native, Expo and Python apps.

An AI spreadsheet that connects to your data and writes formulas, Python and SQL.

Data-oriented learning paths including Python and SQL

An extensible IDE for Ada and SPARK projects, with integrated editing, build, navigation, and debugging tools.