
BuiltWith
Wappalyzer
WhatRuns
Elucify
What CMS
Similar Tech
KiteDesk
Lead Forensics
2FAS
Aegis Authenticator
andOTP
OTP Auth
Authenticator
Authenticator Plus
Authy
TOTP Authenticator
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.
Based on our record, BuiltWith should be more popular than 2FAS. 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 / 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
FWIW 2FAS starts to show you the next code near the end of the window, this is very handy https://2fas.com/. - Source: Hacker News / about 1 year ago
I personally switched to using 2FAS[0]. My favorite feature is that it comes with a browser extension that can automatically fill in the OTP on web forms, after approving the request on the phone app. [0] https://2fas.com/. - Source: Hacker News / over 1 year ago
I'd go with number 2 unless you want to buy everyone a hardware token (option number 3). There are open source solutions (I've used https://2fas.com/ ) and very common solutions (Google Authenticator). You can even print out the QR code and put it in a secure location (safe, safe deposit box) as a break-glass in case everyone's phones cease functioning. - Source: Hacker News / almost 2 years ago
Try 2FAS - it works without an cloud account, can import from few other apps (sadly not from Microsoft one) and can export from and import to a file. Works on Android and iOS https://2fas.com/. - Source: Hacker News / almost 2 years ago
My hunt for an open source Authy took me to 2FAS, which has been fine. Any opinions on this offering? 2FAS โ the Internetโs favorite open-source two-factor authenticator https://2fas.com. - Source: Hacker News / about 2 years ago
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Aegis Authenticator - Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens...
WhatRuns - Extension that helps you identify technologies used on any website at the click of a button.
andOTP - andOTP is a two-factor authentication App for Android 4.4+
Elucify - A completely free software tool that uses crowdsourced data to find business email addresses
OTP Auth - The app for calculating one-time-passwords on iPhone and iPad.