FireMonkey is a Firefox browser extension that functions as a lightweight combined user script and user style manager. It provides similar functionality to user script managers such as GreaseMonkey, Tampermonkey and Violentmonkey, and user CSS managers such as Stylish, Stylus and xStyle. It supports GM3 and GM4 script functions, allows users to toggle scripts and CSS on or off via a toolbar button, contains no tracking or advertising, and is released under the Mozilla Open Source licence. It has experimental support for Firefox for Android.
WebExtension.ORG offers free web-hosting space for browser-based open-source applications, with product pages that update release notes and fetch bug reports from github.com. It also provides anonymous bug reporting, RSS feeds for products connected to addons.mozilla.org, and technical support for hosted developers. The site states it is in transition as add0n.com migrates to webextension.org.
Chrome Mask is a Firefox browser extension that lets users toggle a setting to make Firefox appear as Google Chrome to websites that block Firefox access. Unlike generic user agent spoofing extensions, it only applies the Chrome user agent to user-selected specific sites rather than all sites, and automatically updates the Chrome version it pretends to be.
Shortkeys is a free and open source browser extension for Chrome and Firefox that lets users customize keyboard shortcuts. It provides over 100 built-in actions covering tab management, scrolling, navigation, zoom, bookmarks, downloads and video controls, along with custom JavaScript actions, shortcut packs, groups, macros, a shortcut recorder and cloud sync.
Bookmark Manager Zero is a privacy-focused bookmark management suite with browser extensions that work with native Firefox or Chrome bookmarks. It performs link health checking and link security scanning, detecting dead links and flagging suspicious URLs. Optional GitLab sync lets the web and Android apps access bookmarks on mobile devices.
Violentmonkey is an open source userscript manager that provides userscripts support for browsers. It allows customization of web pages and automation of work, with data synced to Dropbox, OneDrive, Google Drive, or a WebDAV service and between different browsers. The extension contains no ads and does not modify web pages automatically; changes are made by installed scripts.
A userscript for modern browsers that shows images and videos behind links and thumbnails. It is a fork of MPIV and requires Chrome or Chromium-based 55+ or Firefox 52+ for main features.
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WebExtension.ORG offers free web-hosting space for browser-based open-source applications, with product pages that update release notes and fetch bug reports from github.com. It also provides anonymous bug reporting, RSS feeds for products connected to addons.mozilla.org, and technical support for hosted developers. The site states it is in transition as add0n.com migrates to webextension.org.
Chrome Mask is a Firefox browser extension that lets users toggle a setting to make Firefox appear as Google Chrome to websites that block Firefox access. Unlike generic user agent spoofing extensions, it only applies the Chrome user agent to user-selected specific sites rather than all sites, and automatically updates the Chrome version it pretends to be.
Shortkeys is a free and open source browser extension for Chrome and Firefox that lets users customize keyboard shortcuts. It provides over 100 built-in actions covering tab management, scrolling, navigation, zoom, bookmarks, downloads and video controls, along with custom JavaScript actions, shortcut packs, groups, macros, a shortcut recorder and cloud sync.
Bookmark Manager Zero is a privacy-focused bookmark management suite with browser extensions that work with native Firefox or Chrome bookmarks. It performs link health checking and link security scanning, detecting dead links and flagging suspicious URLs. Optional GitLab sync lets the web and Android apps access bookmarks on mobile devices.
Violentmonkey is an open source userscript manager that provides userscripts support for browsers. It allows customization of web pages and automation of work, with data synced to Dropbox, OneDrive, Google Drive, or a WebDAV service and between different browsers. The extension contains no ads and does not modify web pages automatically; changes are made by installed scripts.
A userscript for modern browsers that shows images and videos behind links and thumbnails. It is a fork of MPIV and requires Chrome or Chromium-based 55+ or Firefox 52+ for main features.
