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Create, manage, and optimize product feeds for all your marketing channels. Completely free for online stores.

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

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| Website | coosti.com | diffyn.com |
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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 Datafeed Manager by Coosti and Diffyn.
Datafeed Manager by Coosti's answer
Completely free, no hidden fees — Unlike many feed-management tools that charge per feed, product count or channel, Datafeed Manager by Coosti is 100% Free for all online stores, offering unlimited feeds, unlimited products, all channels included, automatic updates, email support and team access
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.
Datafeed Manager by Coosti's answer
Cost-effective for budgets: Since it’s free, it's especially attractive for small or medium-sized stores, or new businesses — you avoid subscription or usage fees typical in commercial tools.
Simplicity & ease of use: The visual mapping/transform interface and support for common file formats (CSV, XML, JSON, etc.) makes setup fast and accessible even without technical skills.
All-in-one solution: Instead of juggling multiple feed tools for different channels, Datafeed Manager centralizes the workflow
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
Datafeed Manager by Coosti's answer
Small to medium-size online stores / e-commerce merchants — merchants with limited budgets or just starting out, who need a robust feed solution but don’t want to pay.
Merchants with many products / channels but limited technical resources — stores that need to manage large catalogs, export to multiple marketplaces and advertising channels, but don’t have developers or data specialists.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Datafeed Manager by Coosti's answer
Datafeed Manager is offered by Coosti as a free service for all online stores worldwide — part of Coosti’s mission to make product feed management accessible to merchants of any size.
The tool is built to lower barriers for merchants to get their products listed across many marketing channels — combining usability (visual editor), versatility (supports multiple file formats and export channels), and scalability (unlimited products/feeds).
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.
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