Firefox extensions
Listed on Firefox Add-ons. They also install in Firefox-based browsers such as LibreWolf, Waterfox, Zen and Floorp.
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15 results
Altair GraphQL Client
A GraphQL client for writing, sending and debugging queries on desktop, in a browser extension and online.
Apidog
An API platform for designing, debugging, mocking and testing APIs, with desktop and web clients.
BuiltWith
A web tool that detects the technologies a website is built with.
Elasticvue
An open-source GUI for browsing and managing Elasticsearch clusters from the desktop or browser.
IBM Equal Access Accessibility Checker
IBM's open-source browser extension and toolkit for automated accessibility checks of web pages.
Inkdrop
A Markdown note-taking app for developers with notebooks, tags, encrypted sync and AI features.
JetBrains Toolbox App
A free desktop manager for installing, updating and rolling back JetBrains IDEs and opening projects in them.
Kilo Code
An open-source AI coding agent for VS Code, JetBrains, the terminal and the cloud.
Material Icons for GitHub
A browser extension that replaces file icons on GitHub with Material Design icons per file type.
Octotree
A browser extension that adds an IDE-style file tree sidebar to GitHub repositories and pull requests.
Polypane
Multi-viewport browser with accessibility and performance tooling built in.
Selenium IDE
A browser extension that records and replays interactions to build end-to-end tests for websites.
Testfully
An API client for building, testing, documenting and monitoring APIs, usable offline or with cloud storage.
webhint
A customizable linting tool that checks websites for accessibility, speed, compatibility and security problems.
WhatRuns
A free browser extension that shows the technologies a website is built with.
