
Resend
Customer.io
Folderly
SENDER
MailChimp
Selzy
Plunk
We bought a billboard in Times Square and we're letting you advertise your startup on it!It's free.

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, Loops.so seems to be more popular. It has been mentioned 9 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | loops.so | diffyn.com |
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What each product offers, as listed by its team.


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


No analysis of Loops.so yet.
Overall verdict
Why this product is good
Recommended for
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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 Loops.so 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 Loops.so and Diffyn. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I thought this would be easy using any of the email marketing tools out there like Resend or Loops, but this was not the case. All of the available tools shockingly handle campaigns at a user instead of organization level. - Source: dev.to / 9 months ago
Previously, I used Loops.so to send out newsletters. However, it involved the tedious task of reformatting the blog post within their campaign editor and re-uploading all media. - Source: dev.to / almost 2 years ago
We have two members with substantial followings, so we designed a landing page for a waitlist in Figma. Implementing in Next.js, hosted on Vercel and integrated with Loops.so, allowed us to efficiently control the design and UX and ramp... - Source: dev.to / about 2 years ago
Tracking Diffyn since Jun 2025.
When comparing Loops.so and Diffyn, you can also consider the following products.


We make it easy to send emails triggered by user behavior. Build, measure and improve your emails to activate and retain users
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Folderly is an all-in-one email deliverability platform to supercharge your email performance. Locate, solve, prevent email deliverability pitfalls, and ensure that your emails reach the Inbox folder.
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Easy to use, powerful and affordable email marketing application.
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MailChimp is the best way to design, send, and share email newsletters.
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