History & Humanities

YourBias.is explains common cognitive biases and describes ways to recognize and avoid them.

The Basics of Philosophy organizes online learning material by philosophical branch, period, movement, and thinker.

OEC Games offers activities based on Observatory of Economic Complexity data, including a trade-themed matching game.

Country Infographics provides maps and comparisons including speed limits and vehicle license plates.

Search and browse the Royal Armouries online collection of objects, archives, and library records.

Forgotten Aviation documents historic aircraft and related warbird information.

CountryEconomy presents economic and sociodemographic data for countries and regions.

MyLifeElsewhere compares countries and cities around the world, including cost-of-living information contributed by users.

OpenSanctions provides an open database and code for working with international sanctions data, politically exposed persons, and related entities.

Killed by OpenAI tracks the lifecycle of OpenAI products and features.

Encyclopedia Mythica provides searchable articles on mythology, folklore, and religion from around the world.

LibreTexts Philosophy introduces fundamental questions about existence, knowledge, values, reason, mind, and language.

True Size of Countries explains country scale comparisons and answers questions about map size.

Manuscript Miniatures collects images of armored figures from medieval European manuscripts created before 1450.

globalEDGE provides international business information, including country profiles, cross-border transactions, and cross-cultural management.

The Internet Encyclopedia of Philosophy publishes philosophy articles written by professional philosophers.

A topic-organized repository curates public datasets for discovery and use.

The Engineering and Technology History Wiki covers fields including bioengineering, communications, and computing.

Royal Constellations visualizes a thousand years of ancestral connections in European royal families.

The Engaging Data gallery collects JavaScript tools, data visualizations, calculators, and maps created by its author.

Theoi Project is a reference guide to Greek mythology, exploring gods, spirits, creatures, and heroes through classical literature and art.

Flagid helps users identify flags with filters for shape, colors, divisions, and geographic regions.

WorldFindr offers geography quizzes on flags, capitals, maps, and identifying countries and states.

Teuteuf Games develops daily geography and photography games for entertainment.