Sources
LingoOK uses these public datasets, dictionaries, and publisher materials. Please respect their licenses.
skywind3000 / Linwei
Local English–Chinese dictionary: glosses, phonetics, and exam tags. By skywind3000 / Linwei.
License: MIT
meetDeveloper
English definitions and cacheable spoken audio.
License: Open data via Wiktionary
Wikimedia Foundation / contributors
The lexical source behind Free Dictionary API. Used under CC BY-SA.
License: CC BY-SA
Voice of America
VOA Learning English articles, audio, and photos for reading and dictation.
License: Publisher terms; used for study
BBC
BBC Learning English audio and text for reading and dictation.
License: Publisher terms; used for study
TED Conferences
TED talk audio and text for original reading and dictation; full-talk rewriting is avoided.
License: CC BY-NC-ND; original study use
Apple Inc.
Apple Newsroom official stories for technology trends and reading selection.
License: Publisher terms; used for study selection
Y Combinator / contributors
Hacker News popular links as an AI, internet, and startup topic radar; article text follows the original source terms.
License: Link aggregator; follow original source terms
SpaceX
SpaceX official updates for space-trend topics; currently used as a manual URL source.
License: Publisher terms; manual source
National Aeronautics and Space Administration
NASA news and science stories. U.S. government works, public domain, used for graded reading and dictation.
License: US government work, public domain
Wikimedia Foundation / contributors
Wikipedia / Simple Wikipedia articles for myths, origin stories, and word histories. Used under CC BY-SA.
License: CC BY-SA
Project Gutenberg
Public-domain fables, fairy tales, and short classics from Project Gutenberg, split into one-lesson stories.
License: Public domain
Wikimedia Foundation / contributors
Public-domain letters and speeches from Wikisource.
License: Public domain / CC BY-SA
The Public Domain Review
Public Domain Review essays and collections: odd images, old books, and forgotten histories, used under CC BY-SA for graded reading.
License: CC BY-SA
Smithsonian Institution
Smithsonian Magazine science and curiosity pieces, selected for study.
License: Publisher terms; used for study selection
Atlas Obscura
Atlas Obscura odd places and stories, selected for study.
License: Publisher terms; used for study selection
Society for Science
Science News Explores stories written for young readers, selected for study.
License: Publisher terms; used for study selection
Future US / Live Science
Live Science discovery pieces, selected for study.
License: Publisher terms; used for study selection
Mental Floss
Mental Floss trivia and culture pieces, selected for study.
License: Publisher terms; used for study selection
National Geographic Partners
National Geographic nature and culture pieces, selected for study.
License: Publisher terms; used for study selection
MetaBrainz Foundation / contributors
MusicBrainz / MetaBrainz music data. Core data is CC0; supplementary material follows its own license.
License: Core data CC0; supplementary CC BY-NC-SA