axe DevTools - Web Accessibility Testing

Vue.js devtools

DevTools browser extension for Vue.js

Vue.js devtools (beta)

vuejs-dev

DevTools browser extension for Vue.js

Requestly: Supercharge your Development & QA

Features: Intercept & Modify HTTPs Requests, API Mocking, GraphQL Mocking, Rest API Client, API Testing, Modify HTTP Headers, etc

Stylebot

Change the appearance of the web instantly

JSON Viewer

teocci

Validates and makes JSON documents easy to read. Open source.

Lighthouse

Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.

Text Editor

Sevina

A free, highly customizable text and code editor extension for your browser.