Violentmonkey
Database Script Tool
Userscripts
Script Manager – SManager
Greasemonkey
Tampermonkey
UserStyles.world
A site for user scripts.

DevTools Advanced
FullStackToolkit
DevFinanceTools
JSON Formatter & Validator
AllDevToolsHub
Boop
DeveloperTools.Tech
120 free browser-based developer utilities. No sign-up required.
Which is more popular?
Based on our record, Greasy Fork seems to be more popular. It has been mentioned 29 times since March 2021.
Website, pricing, platforms and company facts side by side.
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GF
Greasy Fork
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| Website | greasyfork.org | devtoolstack.io |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.

Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Greasy Fork and DeveloperToolStack. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Have tampermonkey installed (google), then go to greasyfork (website) I have the link here https://greasyfork.org/en and search up character ai, have fun :)). Source: over 3 years ago
If the above mentioned URL rewriter doesn't work for you (I found it hard to use myself, and never could get the rules figured out), then you could try using https://github.com/janekptacijarabaci/greasemonkey and finding a redirect... Source: over 3 years ago
I was thinking more greasemonkey / userscripts. Source: over 3 years ago
Tracking DeveloperToolStack since Aug 2026.
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