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The friends in your texts that help run your business.

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

Website, pricing, platforms and company facts side by side.
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| Website | nossy.ai | diffyn.com |
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| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Nossy builds your ops system and runs it from the chat your team already uses
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What each product offers, as listed by its team.


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


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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 Nossy and Diffyn.
Nossy's answer
Nossy builds a custom system for your business through an AI interview, then your team runs it from the chat app they already use.
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.
Nossy's answer
No new app to learn: Nossy works in the group chat your team already uses. It adapts to how you work instead of forcing a template, and you own your data.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
Nossy's answer
Local business owners who want the system that fit their need and want to outsource ops/human work
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Nossy's answer
Our founder runs a cafe. We built a bot for its bookkeeping, it survived a real tax audit, and grew to 150-200 paying businesses. Customers kept asking for more than accounting, so we built Nossy: AI builds the tailored system, the team runs it in chat. The cafe still runs on Nossy today.
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.
Nossy's answer
Our first customer is the founder's own cafe, which runs daily operations on it. The team also built zendaibills.com, serving 30,000 local businesses in Thailand
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