Britannica 代替案 & 競合他社
Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.
代替品と競合他社 britannica.com コンテンツ、トラフィック、構造に関して
The dictionary by Merriam-Webster is America's most trusted online dictionary for English word definitions, meanings, and pronunciation. #wordsmatter
Dictionary.com is the world’s leading online source for English definitions, synonyms, word origins and etymologies, audio pronunciations, example sentences, slang phrases, idioms, word games, legal and medical terms, Word of the Day and more. For over 20 years, Dictionary.com has been helping millions of people improve their use of the English language with its free digital services.
Welcome to A+E Networks EMEA is global broadcaster who reach audiences in over 100 countries, including the UK, Nordics, Benelux, Central & Eastern Europe, Spain, Italy and Germany, Africa, and the Middle East.
Pioneers in Language Reference for 200 years. Popular and trusted online dictionary with over 1 million words. Find definitions, meanings, synonyms, pronunciations, translations, origin and examples.
We unlock the potential of millions of people. Our qualifications, assessments, academic publications and original research spread knowledge and spark enquiry.
The world’s largest and most trusted free online thesaurus. For over 20 years, Thesaurus.com has been helping millions of people improve their mastery of the English language and find the precise word with over 3 million synonyms and antonyms.
The World's most comprehensive free online dictionary, thesaurus, and encyclopedia with synonyms, definitions, idioms, abbreviations, and medical, financial, legal specialized dictionaries
Read exclusive biographies, watch videos & discover fascinating stories about your favorite icons, musicians, authors & historical figures.
The Library of Congress is the nation's oldest federal cultural institution, and it serves as the research arm of Congress. It is also the largest library in the world, with more than 162 million items. The collections include books, sound recordings, motion pictures, photographs, maps, and manuscripts.
History, Travel, Arts, Science, People, Places Smithsonian Magazine.
Lumen Learning offers affordable digital courseware & professional development resources to enhance effective teaching and increase student success. Explore our 50+ college courses today!
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
Search and explore the millions of quality, peer-reviewed journal articles published under the Taylor & Francis and Routledge imprints.
Springer - Our business is publishing. Throughout the world, we provide scientific and professional communities with superior specialist information;
The Free Online English Dictionary from Macmillan Education. Definitions, meanings, synonyms, pronunciations, games, sound effects, high-quality images, idioms and metaphors, resources for teachers and students
Access 130+ million publications and connect with 20+ million researchers. Join for free and gain visibility by uploading your research.
Our online dictionary is the best source for definitions and origins of words, meanings of concepts, example sentences, synonyms and antonyms, grammar tips, and more.
SAGE is a global academic publisher of books, journals, and a growing suite of library products and services.
Take a photo of your homework question and get answers, math solvers, explanations, and videos. Works for Math, Science, History, English, and more.
Instant access to millions of Study Resources, Course Notes, Test Prep, 24/7 Homework Help, Tutors, and more. Learn, teach, and study with Course Hero. Get unstuck.
Famous People - Famous People in History, Famous People List & Biography.
A huge collection of all the celebrity net worths of the world. How much is Floyd Mayweather worth? Compare yourself to your favorite celebrity.
Récits, enquêtes, portraits…Tout ce qu’il faut savoir pour briller en société se trouve sur Vanity Fair.
Attention Required! | Cloudflare.
The Atlantic covers news, politics, culture, technology, health, and more, through its articles, podcasts, videos, and flagship magazine.
Washingtonpost.com is ranked number 395 in the world and links to network IP address 23.216.241.33.
Go to NBCNews.com for breaking news, videos, and the latest top stories in world news, business, politics, health and pop culture.
LibreTexts is developing the next generation of open-access texts. Open. Free. Accessible to all.
Explore National Geographic. A world leader in geography, cartography and exploration.
Live Science features groundbreaking developments in science, space, technology, health, the environment, our culture and history.
Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.
Thesaurus and word tools for your creative needs. Find the word you're looking for!
BCcampus Open Publishing – Open Textbooks Adapted and Created by BC Faculty.
Math explained in easy language, plus puzzles, games, worksheets and an illustrated dictionary. For K-12 kids, teachers and parents.
Free math problem solver answers your algebra homework questions with step-by-step explanations.
Longman English Dictionary - the leading dictionary for learners of English of all levels: definitions, idioms, examples and more.
Find affordable, top-rated private tutors in 250+ subjects and test prep on Wyzant.com. Quick online scheduling for in-person and online tutoring help.
Vocabulary.com helps you learn new words, play games that improve your vocabulary, and explore language.
Symbolab: equation search and math solver - solves algebra, trigonometry and calculus problems step by step
Elsevier est une entreprise mondiale d'analyse de données qui aide les instituts et les professionnels de santé à faire avancer la science et à améliorer leurs performances.
Official website of the National Institutes of Health (NIH). NIH is one of the world's foremost medical research centers. An agency of the U.S. Department of Health and Human Services, the NIH is the Federal focal point for health and medical research. The NIH website offers health information for the public, scientists, researchers, medical professionals, patients, educators,