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Symbolic and numerical mathematics with notebook interfaces

Symbolic calculation through a compact command interface

Everyday calculation categories with a simple keypad

Convert TeX-family sources into web and ebook formats

Engineering calculations documented in natural notation

A detailed reference of web interaction and implementation choices

Basic maths videos and worksheets organised around numeracy, arithmetic and related topics.

Searchable app recordings organized into journey chapters

Calculators for work, study and household questions

Symbolic, numerical and number-theory calculators

Compare mathematical curves with a shared time parameter

Instructional writing reference from UW-Madison

AI product photos, fashion lookbooks and headshots from reference images

Maths explanations, puzzles, games, a dictionary and worksheets.

A community-written Go reference with diagrams and discussion

Clinical educational libraries and case-based reference reading

Create and explore Islamic geometric mosaic tiles.

Writing and citation reference for academic and professional tasks

Calculators with worked steps for selected problems

History reference supported by timelines, maps and sources

Fossil collections, taxa and literature in a searchable reference

Educational reference on oxygen and respiratory care

Literary reference organized around people, works and context

Brain reference atlases and research datasets