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Add-on for administering user scripts in Google Chrome. Includes an editor with syntax highlighting, a script search for the currently displayed pages, compatibility options for Greasemonkey scripts, and other functionality.

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Browser plug-in for the O3D API that enables you to display 3D objects and animations. Supports the Firefox browser from version 2 onwards, Internet Explorer from version 7, and Google Chrome. Notes about compatible graphics cards on the manufacturer’s web site.

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Plug-in for watching Flash animations online. Can also play MPEG-4 AVC (H.264) and High Efficiency AAC (HE-AAC) files.

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Firefox and Google Chrome add-on that provides a bar with web developer tools. Can display the size and outlines of various page elements, hide images, display CSS changes and much more. Also available for the Flock and [PRG,SeaMonkey] browsers. Fast and secure download from The H

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User profile for the Firefox web browser, optimised for secure anonymous surfing. The profile has been designed for use with the JonDo anonymisation program, but can also be used with other services such as TOR or standalone.

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Browser add-on that locates former Facebook friends who have unfriended you or deleted their accounts. Also displays all past and open friendship requests you’ve made; requires Greasemonkey. Violated Facebook's terms and has therefore been withdrawn.

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Add-on for the Firefox browser for simultaneously using several accounts in the same web service. You can use the context menu to open a new browser window in which you can log on to the particular web service with a different account while continuing to work in the original window, using the account that is already logged on.

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Browser extension. Allows running web applications in offline mode, if the websites are designed for Google Gears. Current beta version is primarily aimed at developers.

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Firefox and Chrome upgrade that sets up only encrypted connections (HTTPS) to web sites. The Chrome add-on is currently available only as a beta version for testing purposes.

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Switches between different proxy configs after one-time configuration; the user can enter conditions so that, when these are met, the program automatically loads certain configurations, for example, after plugging in a network cable, or discovering a WLAN connection; suitable for Internet Explorer and Firefox. Fast and secure download from The H

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Extends Firefox by adding editing functions so you can change how web sites are displayed and, for example, delete superfluous elements.

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Executable user script designed as an extension to Google Chrome. Enables you to edit web sites you’ve just displayed, as you can in Greasemonkey or GreaseKit.

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Firefox add-on to display HTTP data exchanged between Firefox and a server during a web session.

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Ad blocker for the Google browser Chrome.

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Expansion pack for Firefox, Google Chrome, Internet Explorer, Safari and Opera which allows safe surfing by providing information about the trustworthiness of a web site about to be accessed.

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Firefox add on for synchronising bookmarks between different (Firefox) browsers. Favourites can be saved WebDAV or FTP folders so that the user can access the links from anywhere. Supports backups in JSON (Firefox 3) as well as HTML format to allow links to opened in other browsers. Download requires the user to open a free user account; no longer available.

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Allows you to carry out quick searches via the Firefox browser's address bar, featuring shortcuts to Google, Google Maps, YouTube, Wikipedia, eBay, Amazon and other sites. Suggest (search suggestions) and Instant Loading (loading while a term is being entered) can be configured individually for each search plug-in. Fast and secure download from The H

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Firefox extension that marks the contents of web pages at the click of a mouse button and alerts you to updates.

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An extension for Seamonkey, Firefox and Netscape. Replaces flash content with placeholders. Clicking on a placeholder opens the intended flask object.

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Firefox extension that uses JavaScript browser programs to change the appearance of web sites in almost any way.

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