
Violentmonkey
Greasemonkey
Userscripts
Greasy Fork
Database Script Tool
Script Manager – SManager
FireMonkey
Greasemonkey compatible script manager.

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, Tampermonkey seems to be more popular. It has been mentioned 135 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | tampermonkey.net | diffyn.com |
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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
Tampermonkey is recommended for developers, tech enthusiasts, and users who wish to customize their web browsing experience. It's especially useful for individuals who frequently use specific websites and want to automate repetitive tasks or add new functionalities that are not natively supported by those sites.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
5步让你玩转chrome浏览器神级插件tampermonkey-油猴
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 Tampermonkey 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 Tampermonkey and Diffyn. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


// ==UserScript== // @name ChatGPT Firefox Input Focus Fix // @namespace http://tampermonkey.net/ // @version 1.0 // @description Fixes lost first keystroke in ChatGPT input on Firefox by focusing and clicking the... - Source: dev.to / over 1 year ago
// ==UserScript== // @name Hide Expanding Menu Bar // @namespace http://tampermonkey.net/ // @version 0.1 // @require https://code.jquery.com/jquery-3.6.0.min.js // @description Hides Zillow auto-expanding menu //... - Source: dev.to / over 1 year ago
// ==UserScript== // @name Remove data-dark-theme attributes // @namespace http://tampermonkey.net/ // @version 2024-06-23 // @description Remove data-dark-theme attributes from GitHub Actions console // @author ... - Source: dev.to / over 2 years ago
Tracking Diffyn since Jun 2025.
When comparing Tampermonkey and Diffyn, you can also consider the following products.

Violentmonkey is a userscript manager to support running userscripts in web pages.
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Customize the way a web page displays or behaves, by using small bits of JavaScript.
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An open-source userscript editor for Safari.
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Database Script Tool is an all-in-one functional code generator that allows you to generate several types of code, including SQL standard commands, classes, resource files, HTML 5 forms, Data managers, and more to add.
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Script Manager – SManager is an Android application that makes it easy for you to execute scripts and executables, file manager, multi-tab browser root explorer, and terminal emulator.
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