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en.wikibooks.org favicon

Access free textbooks and learning guides

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Wikibooks offers free, open-content textbooks and learning resources on a wide range of subjects, available for anyone to read, use, and share.

eol.org favicon

Discover facts about every living species

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Explore a vast online encyclopedia about all living species, with educational resources and multilingual support for learners, teachers, and nature lovers.

powo.science.kew.org favicon

Discover and research plants worldwide

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Explore detailed information on global plant species, access scientific data, and build custom plant checklists with Plants of the World Online by Kew Science.

outhistory.org favicon

Explore LGBTQ history through stories and exhibits

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Discover LGBTQ history with timelines, exhibits, and stories. OutHistory shares resources, oral histories, and guides to help you explore the past.

en.wikiversity.org favicon

Explore free courses and learning materials

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Wikiversity offers free educational resources, courses, and collaborative learning projects across a wide range of subjects for self-learners and educators.

blackpast.org favicon

Explore Black history from around the world

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Discover Black history worldwide with BlackPast.org, an online encyclopedia offering articles, resources, and educator tools on African heritage.

wisdomlib.org favicon

Discover texts on world religions and history

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Explore a vast digital library of books, articles, and resources on Hinduism, Buddhism, Jainism, philosophy, and ancient history from around the world.

patterns.dataincubator.org favicon

Access a comprehensive guide to Linked Data patterns

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Explore a free online book about Linked Data patterns, offering downloadable resources and practical insights for understanding linked data concepts.

aosabook.org favicon

Explore open source software architecture guides

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Discover in-depth explanations of open source software architecture with free, expert-written chapters and insights for developers and learners.

worldbirdnames.org favicon

Find and learn about every bird species worldwide

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Explore global bird species with the IOC World Bird List—an up-to-date resource for bird names, classification, and taxonomy used by bird enthusiasts worldwide.

jisho.org favicon

Search Japanese words, kanji, and phrases instantly

83%

Look up Japanese words, kanji, and phrases in English with Jisho.org’s easy-to-use online dictionary and powerful search options.

deeplearningbook.org favicon

Access the Deep Learning book online for free

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Read the full Deep Learning textbook online for free—an accessible resource for students and practitioners exploring machine learning and AI.

animals.sandiegozoo.org favicon

Discover animals and watch live zoo cams

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Explore animals, plants, habitats, and live cams from the San Diego Zoo. Discover fun facts, videos, and stories for animal lovers of all ages.

edisontechcenter.org favicon

Learn engineering through videos and articles

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Explore engineering history and concepts with videos, articles, and resources designed to support learning and curiosity about technology and innovation.

en.wikivoyage.org favicon

Discover and edit travel guides for any destination

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Explore and edit a free, worldwide travel guide with tips on sights, food, activities, and lodging—available in many languages and open to everyone.

studylight.org favicon

Explore Bible study tools and devotionals for free

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Access free online Bible study tools, including commentaries, dictionaries, devotionals, and more to help you read and understand God's Word.

eo.wikipedia.org favicon

Explore and edit the Esperanto encyclopedia

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Vikipedio is the Esperanto-language Wikipedia, offering a free, collaborative encyclopedia with over 370,000 articles for readers and contributors.

wikidata.org favicon

Explore and edit a global knowledge database

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Wikidata is a free, collaborative knowledge base with millions of data items that anyone can view, edit, and use for research or projects.

simple.wikipedia.org favicon

Understand topics with simple, clear articles

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Simple Wikipedia offers clear, easy-to-read encyclopedia articles on a wide range of topics, making knowledge accessible for all ages and English learners.

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Search German laws and court rulings easily

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Find German and European laws, legal texts, and court decisions with easy search and references. All content is in German for legal research and guidance.

Top Worldwidewords.org Alternatives (Matching Language)

ikonet.com favicon

Discover the world with visual encyclopedias

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Explore visual encyclopedias, interactive games, and educational tools to learn about the world through images and engaging content. Available in multiple languages.

timelessmyths.com favicon

Dive into myths and legends from many cultures

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Explore the fascinating world of history and mythology with detailed stories and articles about ancient legends, gods, and cultures from around the globe.

greek-language.gr favicon

Discover Greek language resources and guides

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Explore resources, tools, and guides on Greek language, literature, and history. The portal offers educational content in Greek for all levels.

foodsubs.com favicon

Find ingredient substitutions in seconds

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Discover ingredient substitutions, synonyms, and detailed info for thousands of foods. Find alternatives and learn more about cooking ingredients easily.

searchtruth.com favicon

Find Quran, Hadith, and prayer times worldwide

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Explore the Quran, Hadith, prayer times, Qiblah direction, Islamic calendar, and names—all in one place. Includes a free Islamic dictionary and resources.

surlalunefairytales.com favicon

Discover annotated fairy tales worldwide

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Explore annotated fairy tales, folktales, and illustrations from around the world, with histories, cultural notes, and a searchable folklore database.

zimbabweflora.co.zw favicon

Discover Zimbabwe's native plants with photos and facts

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Explore detailed information and photos of Zimbabwe's plants, including species descriptions, habitats, and distribution across the region.

dictionary.com favicon

Find word meanings and synonyms instantly

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Look up English word meanings, synonyms, origins, and usage examples. Play word games and discover new words every day on this trusted online dictionary.

yourdictionary.com favicon

Find clear definitions and synonyms instantly

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Look up word definitions, meanings, synonyms, grammar tips, and example sentences from trusted sources—all in one easy-to-use online dictionary site.

u-s-history.com favicon

Discover U.S. history with articles, maps, and quizzes

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Explore key topics in American history with detailed articles, maps, timelines, quizzes, and resources designed to help students learn and study.

netstate.com favicon

Discover state facts, symbols, and history

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Explore facts, symbols, maps, and history for all 50 U.S. states, plus quizzes and printable resources to help you learn more about each state.

utilitarianism.net favicon

Explore utilitarianism with peer-reviewed guides

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Utilitarianism.net offers a free, peer-reviewed academic guide to utilitarian philosophy with essays, study guides, and resources for deeper learning.

routledge.com favicon

Access in-depth philosophy articles online

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Explore philosophy topics and thinkers with the Routledge Encyclopedia of Philosophy—an online resource for articles, overviews, and scholarly insights.

oxfordreference.com favicon

Explore expert Oxford reference works online

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Access trusted dictionaries and reference works from Oxford University Press online, covering subjects like law, literature, science, and more.

animaldiversity.ummz.umich.edu favicon

Discover facts about animals worldwide

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Explore detailed information, images, and facts about animal species from around the world on this educational online encyclopedia for all ages.

ethnologue.com favicon

Discover facts on 7,000+ world languages

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Explore details on over 7,000 living languages worldwide. Ethnologue offers easy access to language facts, maps, and statistics for research and learning.

phrases.org.uk favicon

Discover the stories behind everyday phrases

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Explore the meanings and origins of common phrases, sayings, and idioms in English with easy explanations and interesting background stories.

encyclopedia.com favicon

Access millions of trusted encyclopedia articles

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Explore millions of articles, facts, and media in this free online encyclopedia—your go-to source for research, homework help, and reliable information.

bibleserver.com favicon

Compare Bible translations side by side

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Read and compare Bible translations in over 20 languages, take notes, and explore commentaries and study tools for deeper Bible understanding.

mixtape.scunning.com favicon

Explore causal inference concepts online

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Read the full text of 'Causal Inference: The Mixtape' online and access chapters, teaching resources, and sessions about causal inference methods.

More Worldwidewords.org Alternatives

etymonline.com favicon

Explore the roots of English words instantly

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Discover the origins and histories of English words, phrases, and idioms with this easy-to-use online etymology dictionary and language resource.

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Learn the difference between anything quickly

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Pediaa.com helps you explore answers and differences on a wide range of topics, making learning easy with clear explanations and useful comparisons.

mathwords.com favicon

Quickly look up math terms and formulas

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Browse math terms, formulas, and diagrams from algebra to calculus. Mathwords helps you easily understand key math concepts and definitions online.

theodora.com favicon

Explore job titles and global reference tools

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Browse job titles, country info, and reference tools with ITA. Explore occupations, stats, and dictionaries all in one easy-to-navigate resource site.

company-histories.com favicon

Explore the origins of top companies

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Discover how famous companies were founded, explore inspiring business stories, and learn about the journeys behind well-known brands and entrepreneurs.

maicar.com favicon

Browse Greek myths, gods, and legends online

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Explore Greek myths, gods, and legends with detailed stories and resources written online. Discover the world of ancient Greece and its mythology.

shakespeare-online.com favicon

Find clear answers to your Shakespeare questions

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Explore Shakespeare's plays, biographies, essays, and glossaries with in-depth analysis and answers to common questions—all in one easy-to-use site.

wissen.de favicon

Teste dein Wissen und entdecke geprüfte Infos

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Wissen.de ist ein deutschsprachiges Wissensportal mit Lexika, Wörterbüchern, Wissenstests und geprüften Infos rund um Allgemeinbildung und Alltag.

trilobites.info favicon

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Explore detailed guides on trilobite biology, classification, and history, with in-depth articles, images, and resources for enthusiasts and researchers.

archive.flossmanuals.net favicon

Explore free guides for open source software

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FLOSS Manuals offers free guides and manuals on open source software, helping users and educators learn practical tech skills in multiple languages.

reference.com favicon

Get quick answers to everyday questions

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Find clear answers to questions about history, science, culture, and more. Reference.com makes learning easy with articles on a wide range of topics.

academic.ru favicon

Find Russian definitions and encyclopedia entries

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Russian-language site offering dictionaries and encyclopedias to help you find definitions, explanations, and detailed information on various topics.

biography.com favicon

Discover inspiring life stories and biographies

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Explore detailed biographies, videos, and stories about celebrities, historical icons, and influential people from all walks of life on Biography.com.

lexilogos.com favicon

Access dictionaries and maps for every language

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Find dictionaries, maps, books, and language tools for countries around the world. Explore resources to learn about languages and cultures. (French site)

countrystudies.us favicon

Discover detailed country profiles online

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Explore in-depth country profiles with detailed info on history, society, economy, and politics, sourced from the Library of Congress Country Studies series.

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Discover minerals with detailed data and photos

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Explore a comprehensive mineral database with detailed species descriptions, images, and classification info for students, collectors, and enthusiasts.

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Discover literature, history, and Nova Scotia topics

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Explore articles on literature, history, law, biographies, and Nova Scotia wildflowers. Learn about Acadian culture and more in one accessible place.

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Discover thousands of orchid species with photos

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Explore a vast photo encyclopedia of orchid species, including growing tips, names, bloom times, and where orchids are found worldwide.

wordspy.com favicon

Explore newly coined and curious words

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Discover new and unusual words, their meanings, and origins. Word Spy helps you explore fresh language trends and quirky vocabulary in English.

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Discover writing systems and languages worldwide

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Explore writing systems, languages, and useful phrases from around the world. Omniglot is your guide to alphabets, scripts, and multilingual learning.