wikipedia.org
Wikipedia
★★★★★ 4.8 · 2 041 votes
The first tab after a search. Talk pages and citations matter more than the infobox.
Reference
24 sites · 10 per page. Newest first. Stars are public votes, one per IP.
britannica.com
Encyclopædia Britannica
★★★★☆ 4.4 · 318 votes
Signed articles, slower cadence. Useful when Wikipedia’s talk page is a war.
plato.stanford.edu
Stanford Encyclopedia of Philosophy
★★★★★ 4.9 · 512 votes
Peer-reviewed entries. Open, dense, and the bibliography is the point.
archive.org
Internet Archive
★★★★★ 4.7 · 890 votes
Wayback, books, TV, software. The catalog of things the live web dropped.
ourworldindata.org
Our World in Data
★★★★★ 4.8 · 441 votes
Charts with sources. Poverty, energy, health — download the CSV, don’t screenshot the tweet.
gutenberg.org
Open
cia.gov / factbook
Open
mathworld.wolfram.com
Wolfram MathWorld
★★★★☆ 4.3 · 154 votes
Definitions with formulas. Better than a forum thread when you need the exact name of a curve.
wiktionary.org
Wiktionary
★★★★☆ 4.4 · 203 votes
Etymology and usage across languages. The sister project people forget exists.
snopes.com
Snopes
★★★★☆ 4.1 · 367 votes
Urban legends and chain emails, still useful when a screenshot has no date.