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A focused math solver with examples and reference links

PDF reading tools for technical books and research papers

Explore historical colour names through swatches and natural examples.

AI video tool that draws illustrated videos from a script using a template you choose.

AI video generator for text, image, and reference videos, with a real-time avatar and video editing model.

Find human scans, retopologised characters and anatomy reference assets

History reference supported by timelines, maps and sources

Fossil collections, taxa and literature in a searchable reference

Educational reference on oxygen and respiratory care

Quran, Hadith and Islamic history in one reference collection

A structured reference for gene-product functions

South Carolina reference essays enriched with historical media

A searchable reference to historical markers and memorials

Philosophy articles written by professional philosophers

Curated zebrafish genes, expression and research information

Reference searches for laboratory-mouse genetics

A scholarly multimedia reference to Swiss history

A national reference work on Bangladesh

A handbook for reproducible and collaborative data science

Writing-process and research guidance in an online lab

Style, usage and citation reference for editors and writers

North American bird identification and life-history reference

Peer-reviewed social-anthropology reference essays

Health-topic and medical reference for general readers