Calculators
Dictionaries: English
- Merriam-Webster Dictionary
- Collins Online Dictionary
- Oxford Dictionaries
- Cambridge Dictionaries Online
- Includes Dictionary of Idioms
- OED
- Etymology Dictionary
- The Visual Thesaurus
- Dictionary of the English Language
- Webopedia
- Online Computer Dictionary
- WordNet *
- Princeton University
- yourDictionary.com
Dictionaries: Translation
- Google Translate
- French-English: Collins
- French-English: Larousse
- German-English: Collins
- German-English: Beolingus
- Italian-English: Collins
- Italian-English: WordReference
- Latin-English
- Spanish-English
- SDL: Free Translation
- WordReference.com
Encyclopedias/Libraries
- ACM Digital Library
- Answers.com
- Bartleby.com
- Great books online
- Encyclopedia Britannica *
- LibraryThing
- Catalog your books online
- Literary Encyclopedia
- Urbana Free Library
- Wikipedia
Maps
- Bostonography
- Google Maps *
- Google Transit
- Rand McNally
- Driving Directions and Maps
- U.S. Time Zones
- World Sunlight Map *
Miscellaneous
- Apollo Image Archive
- BestPlaces.net
- Broadband Reports
- Catalog Choice
- Democracy.io
- Earth-Sun Geometry
- PhysicalGeography.net
- Geni – Genealogy
- Interest.com
- Rates, calculators
- Kelley Blue Book
- KurzweilAI.net
- M-Lab
- Meaning of Names.com
- Moon Phases: Urbana
- New York Public Library
- Official NIST U.S. Time
- Online Domain Tools
- Open Culture
- Free books, courses, movies et al.
- Sourceforge Speed Test
- Speedtest.net
- Sun and Moon Data
- Table of Numbers
- U.S. Constitution
- U.S. Copyright Office
- UTC Time Zone Converter
- XE.com
- Universal Currency Converter
Nations Online Project
- A-Z list of Countries and Regions in the World
- Map of Europe - Member States of the EU
- Political Map of Central and Eastern Europe
Online Courses
- Academic Earth
- Coursera *
- Stanford et al.
- Duolingo
- The Elements of Drawing
- John Ruskin’s teaching at Oxford
- edX
- Free Online Courses by Harvard & MIT
- MIT OpenCourseWare
- Open Learning Initiative
- Carnegie Mellon University
- Open Culture
- Open Yale Courses
- Udacity
- WMAP's Introduction to Cosmology
Phone & Zip Code Directories
Weather
- Dew Point vs. Humidity
- National Weather Service
- Dew point - Wikipedia
- Humidity - Wikipedia