
Internet Intro
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A daily newsletter uncovering the internet’s most interesting hidden gems.

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, Random Daily Urls seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | randomdailyurls.com | diffyn.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from the United States · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


A daily newsletter uncovering the internet’s most interesting hidden gems, curated by Steven Irby.
No description of Diffyn yet.
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
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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 Random Daily Urls 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 Random Daily Urls 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 run an entire site and newsletter dedicated to showing fun things from across the web. I promise you this is not true. It's just all buried under a mountain of crap now. https://randomdailyurls.com. - Source: Hacker News / 5 months ago
I'm doing a challange to build and ship 25 projects in 25 weeks. It's been tough as hell. I'm on week 16. The goal is to build cool, interesting sites for my newsletter to show that the old web is still alive and well.... - Source: Hacker News / 8 months ago
Yup, I think human curration is the way forward. Email newsletters, RSS, etc. It's "old school" but it's the sanest way. I'm doing my part on the human curration side. My shameful plug: https://randomdailyurls.com A human curated... - Source: Hacker News / 9 months ago
Tracking Diffyn since Jun 2025.
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