#reference

IKEA Complexity Index

Interactive tool visualizing assembly complexity across IKEA's product catalog. Handcrafted reference site offering a novel way to explore and understand IKEA products.

Immersive Linear Algebra

Interactive linear algebra textbook with fully interactive figures. A handcrafted educational resource by academics (Ström, Åström, Akenine-Möller) covering vectors, matrices, eigenvalues, and fundamental linear algebra concepts. The first textbook to pair mathematical exposition with fully interactive visualizations.

The Index of Indexes

A maintained meta-index of indie web and blog indexes, curating discovery tools for the small web ecosystem. 38 entries across 6 categories including curated directories, feed aggregators, and personal site collections.

command-not-found

Find the package that contains a command. Covers major Linux distributions and macOS.

OneLook

Search multiple dictionaries at once. Reverse dictionary, thesaurus, and pattern matching.

Stanford Encyclopedia of Philosophy

Authoritative, peer-reviewed philosophy reference. The definitive resource for philosophy.

HyperPhysics

Encyclopedic physics reference. Concept maps connecting physics topics.

Organic Chemistry Portal

Organic chemistry resources. Reactions, mechanisms, and synthesis.

Basketball Reference

Complete basketball statistics. Every player, every game, every stat.

Pro Football Reference

Complete NFL statistics database. Historical and current stats.

FBref

Soccer/football statistics. Comprehensive data from leagues worldwide.

MathWorld

Comprehensive mathematics encyclopedia. Definitions, theorems, and explanations for every math concept.

Learn X in Y Minutes

Quick reference guides for programming languages. Learn the syntax of a new language in one page.

explainshell

Paste a command line and get a breakdown of every argument. Essential for understanding complex shell commands.