Encyclopedia Britannica
Explore the fact-checked online encyclopedia with objective articles, biographies, videos, and images from experts.
britannica.com · 49,874
The Free Dictionary
The world's most comprehensive free online dictionary, thesaurus, and encyclopedia with synonyms, definitions, idioms, abbreviations, and specialized dictionaries.
thefreedictionary.com · 38,224
Urban Dictionary
A popular website for user-generated definitions and slang terms.
urbandictionary.com · 32,656
Time and Date
Your go-to site for time, time zones, and astronomy tools. Stay organized with free online resources. No sign-up required.
timeanddate.com · 24,378
YourDictionary
Online dictionary with definitions from trusted sources, origins of words, example sentences, grammar tips, and more.
yourdictionary.com · 17,440
Wiktionary
A free dictionary with over 1,000,000 entries in multiple languages
wiktionary.org · 15,891
BrainyQuote
A site offering a collection of inspirational and famous quotes by authors you know and love. Share our Quotes of the Day on the web, Facebook, Twitter, and blogs.
brainyquote.com · 14,909
AcronymFinder
The largest and most trusted database of over 4 million acronyms and abbreviations, with answers to what any abbreviation stands for. Search or filter terms across various categories.
acronymfinder.com · 13,003
Infoplease
A free, authoritative, and respected online encyclopedia, almanac, atlas, biographies, dictionary, and thesaurus.
infoplease.com · 12,770
World Population Review
World Population Review provides live data and projections on world population by country, along with historical information and analysis on population growth, life expectancy, and diversity.
worldpopulationreview.com · 10,537
The Old Farmer's Almanac
Your trusted source for weather forecasts, gardening tips, astronomy, and more
almanac.com · 9,501
Etymonline
The online etymology dictionary is the internet's go-to source for quick and reliable accounts of the origin and history of English words, phrases, and idioms.
etymonline.com · 7,027
WorldAtlas
Explore well-researched and entertaining content on geography, science, current events, and more on WorldAtlas.com.
worldatlas.com · 6,209
OneLook Dictionary Search and Thesaurus
Online dictionary and thesaurus with a wide range of features and functionalities.
onelook.com · 5,680
Abbreviations.com
The Web's largest and most authoritative acronyms and abbreviations resource.
abbreviations.com · 2,923
Airwar
The ultimate aviation encyclopedia with a vast collection of information on aircraft from different eras.
airwar.ru · 1,432
Internet Accuracy Project
Working to improve the accuracy of reference sources we all rely on, both online and off.
accuracyproject.org · 1,275
AccessMyLibrary.com
A trusted source for extensive information on various topics such as Diabetes, Debt Management, Mortgage Interest Rate, Car Insurance, and more.
accessmylibrary.com · 848
Afghan Network iNteractive
A comprehensive source of information about Afghanistan with News, Information, Entertainment & Shopping.
afghan-network.net · 843
Namu Wiki
A collaborative wiki platform covering various topics with a dark-themed design.
namu.wiki · 837
Airline Codes Web Site
A comprehensive database of airline codes used in the aviation industry.
airlinecodes.co.uk · 613
Abbreviation Finder
Find popular acronyms and abbreviations for various categories such as U.S. States, Asia, Africa, Business, and more for free online.
abbreviationfinder.org · 325
Acronyms and Slang
Easily find the meaning of Acronyms, Internet Slang and Abbreviations online with over 3 million definitions available.
acronymsandslang.com · 228
