
Greasemonkey
Tampermonkey
Greasy Fork
Userscripts
Database Script Tool
Script Manager – SManager
FireMonkey
Violentmonkey is a userscript manager to support running userscripts in web pages.

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Which is more popular?
Based on our record, Violentmonkey seems to be more popular. It has been mentioned 46 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | violentmonkey.github.io | opalstack.com |
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Why this product is good
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Recommendations tracked on public social media and blogs since March 2021.


- GPT 4o mini, so you can save your 4o calls for more complex queries https://github.com/altbdoor/userscripts/raw/master/force-gpt3.user.js. - Source: Hacker News / about 2 years ago
Since Tampermonkey seems to be misbehaving, consider using Violentmonkey. Source: almost 3 years ago
Step 1Install violentmonkey (or your favorite user script manager). Source: about 3 years ago
Tracking Opalstack since Sep 2023.
When comparing Violentmonkey and Opalstack, you can also consider the following products.

Customize the way a web page displays or behaves, by using small bits of JavaScript.
Compare Greasemonkey to Violentmonkey or Opalstack:

Greasemonkey compatible script manager.
Compare Tampermonkey to Violentmonkey or Opalstack:

An open-source userscript editor for Safari.
Compare Userscripts to Violentmonkey or Opalstack:

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.
Compare Database Script Tool to Violentmonkey or Opalstack:
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.
Compare Script Manager – SManager to Violentmonkey or Opalstack: