Reference
78 sites
https://onlinebooks.library.upenn.edu/
The Online Books Page, edited by John Mark Ockerbloom and hosted by the University of Pennsylvania, catalogs over 3 million free books available on the web, searchable by author, title, subject, and serial. Notable features include a Celebration of Women Writers, a Read Banned Books section, and prize winners available online, making it an essential reference for anyone seeking freely accessible literature.
http://arthistoryresources.net/ARTHresearchresources.html
Dr. Christopher L.C.E. Witcombe's comprehensive art history reference hub compiles hundreds of links to research resources, image databases, online journals, bibliographies, and visual resources covering art from prehistoric times through contemporary works worldwide. With a detailed site index spanning every major period and region of art history, it serves as an essential starting point for students and scholars doing serious art historical research.
https://skepdic.com/
Robert T. Carroll's Skeptic's Dictionary is a landmark reference site featuring 785 alphabetized entries covering strange beliefs, logical fallacies, cognitive biases, pseudoscience, paranormal claims, and dangerous delusions. Established in 1994 and continuously updated for over two decades, it offers definitions, arguments, reader comments, essays, and book reviews making it one of the most comprehensive skeptical inquiry resources on the web.
https://consumerworld.org/pages/resource.htm
Consumer World is a comprehensive directory of over 2000 links covering everything a savvy shopper or consumer needs, from product reviews and price comparisons to government agencies, scam alerts, and legal rights. First launched in 1995, it covers automotive buying guides, credit and banking resources, travel deals, and consumer complaint resources all in one place.
https://code.cog.dog/nowords
A curated link collection exploring words from other languages that have no direct English equivalent, covering concepts from German, French, Spanish, and more. Part of the ds106 open course community, it invites visitors to illustrate these untranslatable words using images as a creative challenge.
https://educationcreations.org/Free/EducationalLinks.aspx
Education Creations offers a curated collection of free educational links for teachers, homeschoolers, and parents, with categories covering gifted education resources, reading, phonics, math, and fun learning sites. The broader site also includes free worksheets and curriculum samples organized by grade level, making it a handy hub for K-6 classroom materials.
https://nowebwithoutwomen.com/
No Web Without Women is an educational showcase highlighting the pivotal contributions of women in computer science and technology, featuring profiles of pioneers like Ada Lovelace, Hedy Lamarr, and Grace Hopper with historical images and clear explanations of each innovation. The site makes a compelling case for how foundational technologies like algorithms, wireless transmission, and compilers owe their existence to overlooked female inventors and scientists.
http://bowest.com.au/library/theorems.html
A comprehensive reference page from BOWest covering the full range of electrical circuit theorems, including Ohm's Law, Kirchhoff's Laws, Thevenin's and Norton's Theorems, Millman's Theorem, and Star-Delta transformations. Each theorem is presented with clear notation, formulas, and derivations, making it a handy technical reference for students and engineers alike.
http://20000-names.com/
A massive database of over 20,000 names from cultures and languages spanning the entire globe, organized by country, language, and meaning with detailed etymologies included. Visitors can browse everything from Aztec and Anglo-Saxon to Vietnamese and Yiddish names, plus themed categories like Dragon Names, Shadow Names, and Warrior Names for creative use in stories, games, and pet naming.
http://hackeducation.com/
Hack Education is Audrey Watters' long-running independent publication covering the history and critical analysis of education technology, free from advertising and investor influence. With over a decade of archives, essays, and talks, it offers a sharp, skeptical perspective on ed-tech trends, behavioral psychology in learning, and the implications of technology in education.