Browse free open source JavaScript Browser Extensions and Plugins and projects below. Use the toggles on the left to filter open source JavaScript Browser Extensions and Plugins by OS, license, language, programming language, and project status.
Beautiful, responsive, highly customizable popup boxes
Captcha solver extension for humans
A chrome extension for automating your browser by connecting blocks
The Bitwarden browser extension vault
Ghostery Browser Extension for Firefox, Chrome, Opera and Edge
AdGuard browser extension
Translate your page in real time using Google or Yandex
Stylus - Userstyles Manager
DuckDuckGo Privacy Essentials browser extension for Firefox, Chrome
Allows adding extensions from chrome web store on ungoogled-chromium
Scanner detecting the use of JavaScript libraries
In-browser Markdown editor
A simple & straight-to-the-point PHP profiling extension
A tool to install, manage and use Progressive Web Apps (PWAs)
Cat scratch chrome resource sniffing extension
Browser extension that simplifies finding and subscribing RSS and RSSH
Easy-to-use library to remove click delays on browsers with touch UIs
A datepicker for twitter bootstrap
The jQuery plugin that brings select elements into the 21st century
Parse CSS and add vendor prefixes to CSS rules by Can I Use
Automated auditing, performance metrics, & best practices for the web
Browser extension for viewing archived and cached versions of websites
The last carousel you'll ever need
Modular smart mirror platform with a list of installable modules