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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.

Open-source computer algebra with familiar expression syntax

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.

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.

Subject-aware problem solving with worked steps

Mathematical worksheets with natural notation and units

Mathematical calculators arranged by course topic

Translate LaTeX into structured XML and web publications

Formulas and notes arranged on a mathematical worksheet

Mathematical calculators organized by learning topic

Everyday calculation categories with a simple keypad

Convert TeX-family sources into web and ebook formats

Engineering calculations documented in natural notation

Calculators for work, study and household questions

Compare mathematical curves with a shared time parameter

A maths fact programme with an online tutor and a printable partner-practice route.

A supplemental maths programme built around visual puzzles and animated feedback.