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Object Playground: The Definitive Guide to Object-Oriented JavaScript — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Programming Languages →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
3dmol.org ↗	68 match 1 shared topics	3Dmol.js - A modern, object-oriented JavaScript library for visualizing molecular data	en	programming-languages	robotsllmsaihumans	emailphone	none
racketscript.org ↗	67 match 1 shared topics	RacketScript Playground	en	programming-languages	robotsllmsaihumans	emailphone	none
ocapjs.org ↗	66 match 1 shared topics	OCAPJS - object capabilities (ocaps) and JavaScript	en	programming-languages Discourse	robotsllmsaihumans	emailphone	none
effectivejs.com ↗	66 match 1 shared topics	Effective JavaScript	en	programming-languages	robotsllmsaihumans	emailphone	none
cbor.me ↗	65 match 1 shared topics	CBOR playground	en	programming-languages	robotsllmsaihumans	emailphone	none
quick-lint-js.com ↗	65 match 1 shared topics	quick-lint-js: find JavaScript bugs	en	programming-languages	robotsllmsaihumans	emailphone	none
quicklintjs.com ↗	65 match 1 shared topics	quick-lint-js: find JavaScript bugs	en	programming-languages	robotsllmsaihumans	emailphone	none
quantumjavascript.app ↗	64 match 1 shared topics	Quantum JavaScript (Q.js)	en	programming-languages	robotsllmsaihumans	emailphone	none
ramzaev.org ↗	64 match 1 shared topics	Functional programming and javascript	en	programming-languages	robotsllmsaihumans	emailphone	none
objs.dev ↗	64 match 1 shared topics	Overview - ObjectiveScript	en	programming-languages	robotsllmsaihumans	emailphone	none
8hob.io ↗	64 match 1 shared topics	8 Hobbies JavaScript Blog	en	programming-languages	robotsllmsaihumans	emailphone	none
quantumplayground.net ↗	64 match 1 shared topics	Quantum Computing Playground	en	programming-languages	robotsllmsaihumans	emailphone	none
howtojavascript.com ↗	64 match 1 shared topics	How to JavaScript · \| Because '5' === 5	en	programming-languages	robotsllmsaihumans	emailphone	none
rdkitjs.com ↗	64 match 1 shared topics	RDKit.js - JavaScript Example	en	programming-languages	robotsllmsaihumans	emailphone	none
9lon.com ↗	64 match 1 shared topics	9lon - write JavaScript on a 2D canvas	en	programming-languages	robotsllmsaihumans	emailphone	partial · 8
csharpplayersguide.com ↗	64 match 1 shared topics	About the C# Player's Guide	en	programming-languages Gumroad	robotsllmsaihumans	emailphone	none
oida.dev ↗	64 match 1 shared topics	oida.dev \| TypeScript, JavaScript, Rust	en	programming-languages WordPress	robotsllmsaihumans	emailphone	none
fettblog.eu ↗	64 match 1 shared topics	oida.dev \| TypeScript, JavaScript, Rust	European Union en	programming-languages WordPress	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.