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Composer
BuiltWithA great tool to help you discover the technology being used by a variety of websites. I was impressed that upon signing up that I had full access to a free list of leads.
BuiltWith might be a bit more popular than Composer. We know about 162 links to it since March 2021 and only 152 links to Composer. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
It's very confusing that they use the same name as the very well known PHP package manager, composer https://getcomposer.org/. - Source: Hacker News / about 2 months ago
I'm embarrassed I never took the time to understand Composer until now. I have been preaching for a long time to start each PHP project with Composer, even when the project is not going end up on Packagist. - Source: dev.to / about 2 months ago
Waaseyaa is a monorepo. The root composer.json defines 43 subpackages under packages/, each referenced as a path repository with @dev constraints. During development, this is convenient. Composer resolves everything locally, and you never think about versioning. - Source: dev.to / 4 months ago
(P)NPM is an outlier in this behavior compared to package managers of other languages. With package managers like Composer (PHP), pip (Python) and NuGet (.NET) dependencies are by default peer dependencies. That means that in those package managers it is not possible to have multiple versions of the same dependency in your application1. - Source: dev.to / 8 months ago
Download from getcomposer.org and follow installation instructions. - Source: dev.to / 9 months ago
Evan You, creator of Vue.js, is a prime example. Vivek Nair, Co-Founder of BotGauge, notes that You โcreated something that addresses real developer needs with clean logic and thoughtful design.โ Vue.js powers over 1.5 million websites in 2025, a testament to its scalability and developer trust, as reported by BuiltWith. Youโs ability to build a framework independently, without corporate backing, underscores his... - Source: dev.to / about 1 year ago
There exist websites like https://builtwith.com so answer to your question is yes. - Source: Hacker News / over 1 year ago
BuiltWith says the web client is NextJS which is interesting as ChatGPT made a big switch away to Remix IIRC. https://builtwith.com/?https%3a%2f%2fclaude.ai%2fnew. - Source: Hacker News / almost 2 years ago
Also, wow that is an obsene amount of libraries they use: https://builtwith.com/?https%3a%2f%2fspectrum.ieee.org%2fdisney-robot-2668135204. - Source: Hacker News / about 2 years ago
I would say run both sites through https://builtwith.com/ to get what all they used in the building process. Source: over 2 years ago
jQuery - The Write Less, Do More, JavaScript Library.
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
React Native - A framework for building native apps with React
WhatRuns - Extension that helps you identify technologies used on any website at the click of a button.
Babel - Babel is a compiler for writing next generation JavaScript.
Elucify - A completely free software tool that uses crowdsourced data to find business email addresses