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Find out the technology behind websites

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Which is more popular?
Based on our record, BuiltWith seems to be more popular. It has been mentioned 162 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | builtwith.com | diffyn.com |
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| Platforms | — | |
| Company | Startup from Australia | — |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How to Find Competitors Customers | BuiltWith Review | Kas Andz
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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing BuiltWith and Diffyn.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
Share your experience with using BuiltWith and Diffyn. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


A 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.
Sometimes, BuiltWith may not fit your specific business needs. If so, we’ve compiled our list of best BuiltWith alternatives you may want to consider for your profiling.
BuiltWith is a truly comprehensive tool that will mine a ton of information from anyone’s site and serve it to you in a manner you will be able to crunch and use it. You might take your time since it is a lot of...
We have no reviews of Diffyn yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Evan You, creator of Vue.js, is a prime example. Vivek Nair, Co-Founder of BotGauge, notes that You “created something that addresses real developer needs with clean logic and thoughtful design.” Vue.js powers over 1.5 million websites... - Source: dev.to / over 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
Tracking Diffyn since Jun 2025.
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