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

Find named colours, inspect hex values and explore related shades.

Choose a statistical procedure, analyze supplied columns and compare numerical or graphical outputs.

Choose geoscience colormaps with numerical tables and import instructions.

Browse named CSS colours beside their values and aliases.

Generate distinct colours for categories in a data visualization.

Inspect device colour ranges, profile conversions and measurement data.

A distraction-free Markdown editor for writing notes as readable documents.

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

A Markdown writing and notes app with folder and Library modes for Apple devices.

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

Practise consulting cases with peers, resources or a coach

Compare colour references, build complements and convert colour data.

An iPad-first tutoring board that saves lessons as A4 pages in a book for each student.

An open-source classroom whiteboard with shared rooms and private student canvases.

Android scientific calculation with symbolic and graphical tools

A common language for computational mathematics

Portable symbolic algebra with numerical approximation

Structure team knowledge in a page tree with rich blocks and links to active work.

AI reader that explains confusing text in research papers

Chrome extension that saves ChatGPT conversations as PDF, Markdown, Text, CSV, JSON, or Image files.

Web search APIs for AI agents and LLM applications

High-precision numerical expressions with custom functions

Date, number and measurement calculations