BuiltWith
Wappalyzer
WhatRuns
Elucify
What CMS
KiteDesk
Similar Tech
Lead Forensics
SendView
Owletter
Campaign Capture
MailCharts
Competitors App
Kompyte
Tona
CompetitorTrack.io
Subscribe to your competitors' emails with SendView and instead of going to your inbox, emails sent to SendView addresses are parsed into dashboards of sender analytics. Use them to sign up for other companies' emails to gain deep insights into how they send.
BuiltWith SendViewA 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 more popular. It has been mentiond 162 times since March 2021. 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 / over 1 year 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
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Owletter - Keep an Eye on Your Competitors' Newsletters
WhatRuns - Extension that helps you identify technologies used on any website at the click of a button.
Campaign Capture - Watch, capture and analyse your competitors' email campaigns to gain insights into their content, sending patterns and trends
Elucify - A completely free software tool that uses crowdsourced data to find business email addresses
MailCharts - Email marketing intelligeance for e-commerce companies
