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What Is OpenUserJS Used For: Features, Reviews & Alternatives

An open source hosting platform for browser user scripts.

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Editorially updated Oct 5, 2025

The overview

What OpenUserJS is for

OpenUserJS serves as a community-driven, open-source hosting platform specifically for browser user scripts (e.g., Greasemonkey, Tampermonkey, Violentmonkey scripts). It facilitates the web workflow where developers publish custom JavaScript code to modify web pages, and users directly install these scripts into their browsers to enhance functionality, alter UI, or automate tasks on specific websites. The platform provides a centralized repository for discovery, distribution, and version management of these client-side browser modifications.
Key features

1Core Capabilitie

  • Script code hosting and version control
  • Direct `.user.js` installation link
  • Script search and category filtering
  • User account management for script author
  • Script metadata parsing and display

2Specialized Workflow

  • Integrated code syntax highlighting for review
  • Community commenting and feedback system
  • Update notification system for installed script
  • Script statistics (installs, daily users)
  • Reporting mechanism for malicious script

Who it helps

Useful ways to use OpenUserJS

01
Distributing Custom Browser Enhancement
A developer creates a user script to add specific functionality to a frequently visited website, such as a custom UI tweak for a project management tool or a data extraction helper for a public API documentation site. They use to host the script, manage versions, and provide an easy, direct installation point for their users or collaborator
02
Deploying Internal Browser Automation Script
An operations team needs to standardize a specific browser behavior or automate a repetitive task across multiple team members' browsers, for instance, pre-filling forms on an internal tool or adding custom buttons to a legacy web interface. They host a user script on and distribute the installation link, ensuring everyone uses the same, controlled version
03
Discovering Niche Browser Productivity Tool
A startup team is looking for lightweight, browser-based solutions to improve productivity on specific web applications without full-blown extensions. They browse to find existing user scripts that might offer quick wins, such as ad-hoc data visualization on a competitor's site or custom hotkeys for a web-based IDE, leveraging community-contributed solution

A practical path

How to use OpenUserJS

Locating and Installing a Browser Script

Navigate to .org, use the search bar or category filters to find a desired user script. Click on the script's detail page, then click the 'Install' button. Your browser's user script manager (e.g., Tampermonkey) will prompt you to confirm the installation and activate the script

External signals

Reviews & reputation

AI aggregated
4.3/ 5

Aggregated review score

A reliable, community-driven platform for discovering and sharing browser user scripts, valued by developers for its direct installation links and versioning capabilities, though some users desire more robust moderation and advanced privacy features.

G2LarryLudwigProduct ReviewSmartCustomerTrustpilot

Quick answers

Frequently asked questions

1How does OpenUserJS handle script updates for installed scripts?⌄

User script managers (like Tampermonkey or Greasemonkey) periodically check the original installation URL for updates. If a new version is published on OpenUserJS, your script manager will detect it and prompt you to update, or update automatically based on your specific manager's settings.

2Can I host private or unlisted scripts on OpenUserJS?⌄

OpenUserJS is primarily designed for public script sharing. While you can publish a script and not actively promote it, there isn't a built-in 'private' or 'unlisted' feature that restricts access beyond obscurity. For truly private distribution, direct file sharing or a self-hosted solution might be more appropriate.

3What are the requirements for a script to be hosted on OpenUserJS?⌄

Scripts must adhere to the standard Greasemonkey/Tampermonkey metadata block format at the top of the `.user.js` file. They should be functional JavaScript, ideally open source, and comply with the platform's terms of service regarding malicious content, spam, or illegal activities.

4Is there any moderation or security review for scripts uploaded to the platform?⌄

OpenUserJS relies on community reporting and some automated checks for common malicious patterns. While it's an open platform, users are strongly encouraged to review script code before installation, as the platform cannot guarantee the absolute safety or intent of every user-contributed script.

5How does OpenUserJS compare to other user script repositories like Greasy Fork?⌄

Both platforms serve similar purposes for hosting user scripts. OpenUserJS emphasizes its open-source nature and community-driven development. Greasy Fork often has a larger user base and may have stricter moderation policies. The choice often comes down to personal preference, specific script availability, and community engagement.

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