
MockAPI
WireMock
Mockoon
Beeceptor
Apidog
Smock-it
MockingCloud
Using Mocki you can create, run and deploy mock services without hassle. Use your mock services to run tests independent of external services, design APIs and remove backend dependencies for your frontend team.

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, Mocki 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 | mocki.io | diffyn.com |
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| Company | 2020 | — |
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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.


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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 Mocki 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 Mocki and Diffyn. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Mocki is an online tool for creating and hosting mock APIs. It offers easy setup for returning specific responses and supports importing/exporting mock configurations and generating random data. As a cloud-based solution, Mocki... - Source: dev.to / almost 2 years ago
Mocki is an online tool for creating and hosting mock APIs. It allows you to set up a mock version of your API and configure it to return specific responses to incoming requests. mocki.io is relatively easy to use and has a wide range of... - Source: dev.to / almost 4 years ago
Mocki - A tool that lets you create mock GraphQL and REST APIs synced to a GitHub repository. Simple REST APIs are free to create and use without signup. - Source: dev.to / about 5 years ago
Tracking Diffyn since Jun 2025.
When comparing Mocki and Diffyn, you can also consider the following products.

MockAPI lets users mock up APIs, generate custom data, and perform operations on it using RESTful interface.
Compare MockAPI to Mocki or Diffyn:

WireMock - a web service test double for all occasions.
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Mockoon is the easiest and quickest way to design and run mock REST APIs. No remote deployment, no account required, free and open-source.
Compare Mockoon to Mocki or Diffyn:

Unblock yourself from API dependencies, and build & integrate with APIs fast. Beeceptor helps you build a mock Rest API in a few seconds.
Compare Beeceptor to Mocki or Diffyn:

All-in-One workspace for API Design, Documentation, Debug, Mock, Test
Compare Apidog to Mocki or Diffyn:

Smock-it is a powerful CLI tool designed to simplify test data generation for Salesforce. A lightweight alternative to Mokraoo, it helps developers and QAs quickly generate, manage, and customize data for seamless testing and streamlined workflows.
Compare Smock-it to Mocki or Diffyn: