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

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.

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

Create a story and get it as a digital PDF or a printed hardcover.

Configurable crypto price tables with a free developer data allowance

Maintain event-driven Python backtests with the Zipline research model

A browser-based Elixir notebook for executable code and Markdown, with interactive results and collaboration.

Browse company rankings by market value, country and industry

Write Markdown notes with tags, links, and mixed text and media on Apple devices.

Build issue-linked tables, Kanban boards, and roadmaps for work tracked on GitHub.

Load, reshape, and analyze labeled tabular and time-series data with Python.

Model performance scenarios for applications and APIs, generate virtual-user load and analyze run results.

Publish Markdown knowledge pages with revision history and a change approval mechanism.

Choose scientific colour maps and inspect or adapt them in Python.

Python tools for inspecting and manipulating font files.

Build one free resume with unlimited PDF downloads

Create a web resume and decide whether PDF export is needed

Create a PDF resume with a clearly limited free version

React controls for complex desktop-oriented data interfaces

Prepare business datasets and examine relationships with statistical tests, tables and models.

Convert documents between Markdown, HTML, LaTeX, Word, and other markup and word-processing formats.

Compare text contrast with its size, weight and colour direction in view.

Crop repeated PDF margins using page overlays