10 Best Browser DevTools Tools in 2026

Arc is a innovative web browser developed by The Browser Company that reimagines how users interact with tabs, bookmarks, and workspaces. Built on Chromium with native Swift development for macOS, Arc uses approximately 40% less RAM than Chrome while delivering smooth performance. Note: In May 2025, The Browser Company stopped active development of Arc to focus on Dia, their new AI-first browser. Arc continues to receive security updates but no new features. In September 2025, Atlassian acquired the company for million. Arc's Spaces feature enables powerful workspace organization for separating work, personal, and project contexts. The vertical sidebar, proactive tab management, split views, and customizable Boosts let users modify websites with custom themes and CSS. Little Arc provides a floating mini-browser for quick tasks without cluttering the main workspace.

Playwright is an open-source end-to-end testing framework by Microsoft that enables reliable cross-browser testing for Chromium, Firefox, and WebKit.

Jest is a delightful JavaScript testing framework focused on simplicity. Zero config for most JavaScript projects. Snapshot testing catches unintended UI changes. Powerful mocking capabilities for isolating tests. Watch mode re-runs tests on changes. The testing framework React teams trust for fast, reliable tests.

Cypress is a modern end-to-end testing framework built for the web, offering fast, reliable testing with time-travel debugging and automatic waiting.

Testing Library tests components the way users interact with them. Query by role and text, not implementation—testing that encourages accessible code. The philosophy is sound. The queries are user-centric. The tests are meaningful. Frontend developers wanting tests that reflect user behavior use Testing Library.

Jotai offers an atomic approach to global state management in React applications. It allows developers to build state by combining 'atoms,' which are fundamental units of state. This design automatically optimizes renders based on atom dependencies, effectively solving common issues like extra re-renders associated with React Context and reducing the need for manual memoization. Jotai provides a developer experience similar to signals while maintaining a declarative programming model. It's highly scalable, suitable for everything from simple `useState` replacements to complex enterprise-level TypeScript applications. The library includes various utilities and extensions to enhance its functionality and is trusted in production by innovative companies. It features a minimal, TypeScript-oriented API, making it as straightforward to use as React's `useState` hook, but with the added benefits of globally accessible state, easy implementation of derived state, and automatic elimination of unnecessary re-renders. Jotai also supports server-side rendering with frameworks like Next.js and Waku.

Vitest is a blazing fast unit test framework powered by Vite. Compatible with Jest's API for easy migration. Instant watch mode with hot module replacement. Native TypeScript and ESM support. Component testing for Vue, React, and more. The next-generation test runner built for modern JavaScript.

StackBlitz provides instant dev environments in browser. Cloud IDE that starts instantly—development without waiting for setup. The startup is instant. The editing is real. The sharing enables collaboration. Developers wanting instant environments use StackBlitz for browser-based development.

Drizzle Studio provides a visual interface for interacting with SQL databases within Drizzle ORM projects. It connects to your database using your existing Drizzle configuration and SQL schema, allowing you to browse, add, delete, and update data directly. It supports various data types including explicit nulls, empty strings, booleans, numbers, big integers, JSON objects, and JSON arrays. This tool is designed for developers using Drizzle ORM who want a more intuitive way to manage their database content without writing raw SQL queries for basic CRUD operations. It streamlines the development workflow by providing a graphical representation of the database schema and data, making it easier to inspect and modify data during development and testing phases. Key benefits include simplified database exploration, direct data manipulation based on your Drizzle schema, and support for a wide range of data types, enhancing productivity for Drizzle ORM users.

Arc is a browser that reimagines how you use the web. Organize tabs into spaces for different contexts like work and personal. Easels let you capture and annotate parts of websites. Features include split view, automatic tab archiving, and a beautiful sidebar interface. Built-in tools replace many extensions. Arc learns how you browse and adapts. A fresh take on the browser from The Browser Company.