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BuiltWith
Code42A 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.
Based on our record, BuiltWith seems to be a lot more popular than Code42. While we know about 162 links to BuiltWith, we've tracked only 1 mention of Code42. 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.
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
It's not a big surprise, given that Code42 (the parent company) pretends they have nothing to do with Crashplan. They've done a massive pivot to some kind of security company, with ZERO references to the OG product of Crashplan on code42.com, which (I'm guessing) is the bulk of their revenue. If you do a site search on google, you'll find some old links, but they just push you over to crashplan.com. Source: about 4 years ago
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Symantec Data Loss Prevention - Fully protect your data with the comprehensive detection technologies and unified policies of Symantec's industry leading Data Loss Prevention (DLP).
WhatRuns - Extension that helps you identify technologies used on any website at the click of a button.
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.
Elucify - A completely free software tool that uses crowdsourced data to find business email addresses
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.