OpenUserJS

OpenUserJS is a community-driven, open-source hosting platform for userscripts, which are browser-side JavaScript programs that modify or enhance web pages on the fly. Founded in 2013 and built on GitHub infrastructure, the platform hosts thousands of scripts covering ad blocking, page customization, feature enhancements, and productivity improvements across popular sites like YouTube, Twitter, Reddit, and Wikipedia. Scripts are written in JavaScript with a compatible meta-block format similar to Greasemonkey standards, and contributors can publish updates, collect user reviews, and organize scripts into groups and libraries. The platform requires user registration to publish scripts but allows public browsing without an account, and all scripts remain under their respective authors' open-source licenses specified in each script header.