Cat-v.org Random Contrarian Insurgent Organization
reference
NDL Image Bank | National Diet Library
alphaXiv: Open research discussion on top of arXiv | Hacker News
Maker Skill Trees | Hacker News
The Book of Secret Knowledge | Hacker News
Explain that stuff! Science and technology made simple
We make science and technology easy to understand.
Green's Dictionary of Slang | Hacker News
How-To Document: The Documentation System | Hacker News
Documentation System
Find the software documentation system for Divio. Includes comprehensive tutorials, how-to guides, technical reference and explanation. Learn more here.
Our World in Data
Research and data to make progress against the world’s largest problems
MyHeritage debuts OldNews.com, offering access to myriad historical newspapers | Hacker News
Animated Knots | Hacker News
Symbololology
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No-cost access to the latest PDF standard: ISO 32000-2 (PDF 2.0) | Hacker News