Data & Knowledge

Every country's capital, population, area, currency, calling code, languages, continent and neighbours — by code, name or currency.

Search Wikipedia in 300+ languages, get article summaries with images, 'on this day' events, random articles and autocomplete.

Search millions of books by title, author or subject, look up any ISBN, and find authors — powered by Open Library.

English definitions, synonyms, antonyms, rhymes, 'words that mean…' and autocomplete — fast and fully offline.

Search universities in 200+ countries, look up a university by web domain, and verify student email addresses.

Top, new and best tech stories from Hacker News, full-text news search, story details with comments, and Ask/Show HN.

Look up airports and airlines worldwide by IATA/ICAO code or name — location, type, elevation, country, call sign and more.

Public holidays for 150+ countries — including Indian states — plus 'is it a holiday?', upcoming holidays and working-day counts.