Toggles the toolbar in Browserstack Live and App-Live

An extension for designers and developers who care about the grid.

Selenide code-export plugin for Selenium IDE

Quickly and conveniently manage your open tabs with container support.

Promote YouTube videos for free, get more views, subscribers, likes, comments safely.

use UserScripts on your Firefox for Android with usi!

GlotDict extension implements many new features to improve the quality of translation and speed up the process on translate.wordpress.org, where users can translate plugins, themes, WordPress itself and other related projects.

This extension lets you delete all cookies for the currently opened site (current tab).

The Meteor framework development tool belt, evolved.

Colorize issue and PR links to see their status (open, closed, merged)

Adds context menu items to send image links and image files directly to the GIMP photo editor

Unload Tab from context menu to free up system resources. Really it is just to satisfy all of you with OCD. ;D

To use, type 'npm' plus your search term into the url bar.

Development tools for Microsoft Dynamics CRM 2016 and Dynamics365.

A toolbar button to enable selection, copy and typing editing web text redirectly in a tab

Count the characters, words, sentences, paragraphs & whitespaces in a text.

Powerful code snippets manager for dev teams and individuals. Save and organize your code snippets in the cloud. Share and collaborate with your team members. Snip code blocks directly from the pages you visit.

Create beautiful browser and mobile mockups in one-click.

Changes jsbeautifier.org to have 4 spaces, no wrap, and be JSLint-happy by default.

Edit an HTML element with Sublime Text editor with real-time updates

This extension set up a development environment for Drupal contributions

Adds a red border to all webpages vulnerable to click-jacking and missing X-Frame-Options header

Are you tired of switching back and forth from terminal to web apps to validate regular expressions? This web extension will help you check matches in a string against a regular expression.

This tool gives you the ability to look up the registration data for domain names

Adds a button for enabling/disabling Xdebug

Reloading doesn't update your CSS any more? Bypass Firefox's aggressive caching of CSS (and optionally other content) during development. Use the button on the Page Actions menu to grant new host permissions for blocking.

Don't inspect any more.

Overwrite or inject custom CSS into website.

Highlight a row (and column) of current cell in Google Sheets.

Supports developers to integrate fingerprint biometrics readers to web application.

Details for developers and another users can be found on GitHub Project.