Browser devtools include the built-in Chrome/Firefox/Safari devtools plus framework-specific tooling (React DevTools, Vue DevTools, Redux DevTools, Apollo Client DevTools) and standalone tools (Lighthouse, axe, Wappalyzer). Most developers underuse what's already built into the browser.

## Top 3 browser devtools

1. [Dia](https://toolradar.com/tools/dia) #1 Top pick Your AI-powered browser for focused deep workPricingFree4.3 /5 across G2 and SourceForge · 16 ratings, Jun 2026Our takeBest overall[Read the review](https://toolradar.com/tools/dia)
2. [Perplexity Comet](https://toolradar.com/tools/perplexity-comet) #2 An agentic browser that answers questions and takes action across tabsPricingFree plan3.8 /5 across PeerSpot and G2 · 15 ratings, Sep 2026[Read the review](https://toolradar.com/tools/perplexity-comet)
3. [Requestly](https://toolradar.com/tools/requestly) #3 Build, test, and debug APIs faster with a lightweight, open-source API client and web debugger.PricingFree plan4.7 /5 on G2 · 5 ratings, Oct 2026Our takeHighest rated[Read the review](https://toolradar.com/tools/requestly)

## 10 top browser devtools compared

| Tool | Our take | Starting price (Oct 2026) | Rating | Watch out for |
| --- | --- | --- | --- | --- |
| [Dia](https://toolradar.com/tools/dia) | Best overall | Price: Free | 4.3 out of 5, from 16 ratings across G2 and SourceForge G2 4.4 · SourceForge 4.0 | n/a |
| [Perplexity Comet](https://toolradar.com/tools/perplexity-comet) |  | Price: Free + paid | 3.8 out of 5, from 15 ratings across PeerSpot and G2 G2 4.4 · PeerSpot 1.5 | n/a |
| [Requestly](https://toolradar.com/tools/requestly) | Highest rated | Price: Free + paid | 4.7 out of 5, from 5 ratings on G2 G2 4.7 | n/a |
| [Accessibility Insights](https://toolradar.com/tools/accessibility-insights) |  | Price: Free | Rating: n/a | n/a |
| [Checkbot](https://toolradar.com/tools/checkbot) |  | Price: $10/mo | Rating: n/a | n/a |
| [Web Vitals](https://toolradar.com/tools/web-vitals) |  | Price: Free + paid | Rating: n/a | Watch out: No advanced features like historical data storage. |
| [Opera Neon](https://toolradar.com/tools/opera-neon) |  | Price: $19.9/mo | Rating: n/a | n/a |
| [Agent Browser](https://toolradar.com/tools/agent-browser) |  | Price: Free | Rating: n/a | n/a |
| [ModHeader](https://toolradar.com/tools/modheader) | Most affordable | Price: $2/mo | Rating: n/a | Watch out: Monthly billing is double annual ($4 vs $2). |
| [KanjiLens](https://toolradar.com/tools/kanjilens) |  | Price: $4.99/mo | Rating: n/a | n/a |

## Browser DevTools pricing compared

| Tool | Cheapest paid plan | Free plan | Billing basis |
| --- | --- | --- | --- |
| [Dia](https://toolradar.com/tools/dia) | Cheapest paid plan: No paid plan | Free plan: Yes | Billing: Free |
| [Perplexity Comet](https://toolradar.com/tools/perplexity-comet) | Cheapest paid plan: Not published | Free plan: Yes | Billing: Not published |
| [Requestly](https://toolradar.com/tools/requestly) | Cheapest paid plan: Not published | Free plan: Yes | Billing: Not published |
| [Accessibility Insights](https://toolradar.com/tools/accessibility-insights) | Cheapest paid plan: No paid plan | Free plan: Yes | Billing: Free |
| [Checkbot](https://toolradar.com/tools/checkbot) | Cheapest paid plan: Professional (Yearly), $10/mo | Free plan: Yes (Basic) | Billing: Billed monthly |
| [Web Vitals](https://toolradar.com/tools/web-vitals) | Cheapest paid plan: Not published | Free plan: Yes | Billing: Not published |
| [Opera Neon](https://toolradar.com/tools/opera-neon) | Cheapest paid plan: Opera Neon, $19.90/mo | Free plan: No | Billing: Billed monthly |
| [Agent Browser](https://toolradar.com/tools/agent-browser) | Cheapest paid plan: No paid plan | Free plan: Yes (Open Source) | Billing: Free |
| [ModHeader](https://toolradar.com/tools/modheader) | Cheapest paid plan: ModHeader Pro (Annual billing), $2/mo | Free plan: Yes | Billing: Billed monthly |
| [KanjiLens](https://toolradar.com/tools/kanjilens) | Cheapest paid plan: Plus, $4.99/mo | Free plan: Yes | Billing: Billed monthly |

Toolradar pricing data, last verified October 2026. Prices are the cheapest paid plan converted to a monthly figure; "Not published" means the vendor publishes no price for a self-serve paid plan. 4 of 10 tools publish a paid price; median cheapest paid plan $7.50/mo.

Toolradar data

## The browser devtools market in numbers

**Toolradar data:** Toolradar tracks 34 browser devtools as of November 2, 2026. 100% of the browser devtools on Toolradar are free, freemium or open source. Toolradar re-checked the pricing of 68% of browser devtools in the last 90 days. Toolradar aggregates 38 public user reviews (G2, Capterra, Trustpilot and other review sites) across 5 rated browser devtools. The most cross-shopped browser devtool is Agent Browser, listed as an alternative to 10 other tools on Toolradar. The most compared browser devtool on Toolradar over the last 90 days is Agent Browser, with 129 side-by-side comparisons. Computed from the Toolradar catalog and on-site activity.

- 34 browser devtools tracked
- 100% are free, freemium or open source
- 68% of prices re-checked in the last 90 days
- 38 public user reviews aggregated across 5 rated tools

| Rank | Tool | Listed as an alternative to |
| --- | --- | --- |
| 1 | [Agent Browser](https://toolradar.com/tools/agent-browser) | 10 tools |
| 2 | [Requestly](https://toolradar.com/tools/requestly) | 6 tools |
| 3 | [SigmaOS](https://toolradar.com/tools/sigmaos) | 5 tools |

| Rank | Tool | Comparisons |
| --- | --- | --- |
| 1 | [Agent Browser](https://toolradar.com/tools/agent-browser) | 129 |
| 2 | [Opera Neon](https://toolradar.com/tools/opera-neon) | 89 |
| 3 | [SigmaOS](https://toolradar.com/tools/sigmaos) | 84 |

Source and method: [live browser devtools statistics](https://toolradar.com/statistics/browser-devtools)

## Browser DevTools leaderboards from Toolradar data

Toolradar ranks Browser DevTools tools on one measure at a time, only where at least 8 tools have data. As of Nov 2026.

CSV download of these Browser DevTools leaderboards, licensed CC BY 4.0

### Lowest entry price, plans with no stated unit

Cheapest standard paid plan per month (annual prices divided by 12), read on vendor pages and compared only with tools priced on the same basis.

Counted among 9 tools with no stated price unit, verified price.

| # | Tool | Entry plan |
| --- | --- | --- |
| 1 | [ModHeader](https://toolradar.com/tools/modheader) | $2/mo, billed monthly |
| 2 | [tweak](https://toolradar.com/tools/tweak) | $3/mo, billed yearly |
| 3 | [Fake Filler](https://toolradar.com/tools/fake-filler) | $3.33/mo, billed yearly |
| 4 | [ChatHop](https://toolradar.com/tools/chathop) | $4.99/mo, billed monthly or yearly |
| 4 | [KanjiLens](https://toolradar.com/tools/kanjilens) | $4.99/mo, billed monthly |

A position exists only when at least 8 tools have data for that metric. 9 of 34 Browser DevTools tools have a verified price; the others publish none we could read (often "contact sales"). Advertising and placement fees are not inputs to any position. Visit counts include visits from every source. [How we compute this](https://toolradar.com/how-we-rate#toolradar-data). Cite this: Toolradar, “Browser DevTools leaderboards”, Nov 2026. Data licensed CC BY 4.0. [All Browser DevTools statistics](https://toolradar.com/statistics/browser-devtools).

## How the top browser devtools compare

9 of the 10 browser devtools listed here have a free plan (Dia, Perplexity Comet, Requestly, Accessibility Insights, Checkbot, Web Vitals, Agent Browser, ModHeader, KanjiLens); the other 1 (Opera Neon) is paid only. Teams on a budget should start with Dia, our free pick.

Rankings are computed from G2/Capterra review volume and rating, and media mentions. [Editorial policy](https://toolradar.com/editorial-policy)

## Top browser devtools

Order: Toolradar ranking score, which is the public review volume times the average rating on G2, Capterra, Trustpilot and other review sites, plus media mentions (recent ones count more). Paid placements are labelled and never change the score. [How we rank](https://toolradar.com/how-we-rate).

### Dia

100% free

Your AI-powered browser for focused deep work

4.3 /5 across G2 and SourceForge · 16 ratings, Jun 2026

Dia is a specialized browser engineered to optimize professional workflows by intelligently organizing information and proactively suggesting relevant content. It acts as a central hub, integrating with various work tools like GSuite, Slack, Notion, and GitHub to provide a unified view of tasks and information. Dia aims to reduce context switching and information overload, allowing users to concentrate on deep work. The browser features include a "Morning Brief" for daily overviews, "Proactive Suggestions" that surface next steps, and an AI-powered search that answers questions by analyzing context across connected applications. It also offers features for better meeting preparation, distinct work and personal profiles, and advanced tab management. Dia prioritizes user privacy with local data storage, end-to-end encryption for synced data, and strict controls over data sharing for product improvement.

[View details](https://toolradar.com/tools/dia) [Visit website](https://www.diabrowser.com) [Dia alternatives →](https://toolradar.com/alternatives/dia)

Thanks, your review is with our moderators.Used Dia? Rate it

- Pro: Significantly reduces context switching by centralizing work information.
- Pro: Proactive features help users stay organized and focused on priorities.
- Pro: Strong emphasis on user privacy with local data storage and encryption.

- Con: Limited to specific operating system versions and hardware.
- Con: Requires integration with existing work tools to fully leverage its capabilities.

### Perplexity Comet

Free plan

An agentic browser that answers questions and takes action across tabs

3.8 /5 across PeerSpot and G2 · 15 ratings, Sep 2026

Comet is Perplexity's AI-powered web browser. It builds Perplexity's answer engine directly into the browser, letting you ask questions about any page, summarize articles, and use an AI assistant that can take actions across your tabs. It is positioned as an agentic browser that completes tasks, not just one that displays pages.

[View details](https://toolradar.com/tools/perplexity-comet) [Visit website](https://comet.perplexity.ai) [Perplexity Comet alternatives →](https://toolradar.com/alternatives/perplexity-comet)

Thanks, your review is with our moderators.Used Perplexity Comet? Rate it

- Con: Security researchers at Brave demonstrated that Comet's assistant is vulnerable to indirect prompt injection, where hidden instructions planted in an ordinary webpage can hijack the agent to read your email, pull one-time passcodes, and exfiltrate data using your own logged-in privileges.
- Con: Perplexity initially dismissed the disclosed CometJacking data-exfiltration flaw as having no security impact before quietly patching it, which raises questions about how the vendor handles vulnerability reports on an agent that operates across your authenticated sessions.

### Requestly

Free plan

Build, test, and debug APIs faster with a lightweight, open-source API client and web debugger.

4.7 /5 on G2 · 5 ratings, Oct 2026

Requestly is an open-source, lightweight API client and web proxy designed for modern developers to build, test, and debug APIs efficiently. It offers both a browser extension for instant, in-browser functionality and a more powerful desktop application for Mac (with other platforms implied) to handle web, mobile, and desktop app API interactions. Beyond just an API client, Requestly functions as a robust HTTP interceptor and web debugger. It allows developers to intercept and modify network requests, headers, and API responses in real-time. This includes injecting custom scripts (JavaScript/CSS), mocking API responses to build frontends without a backend, simulating edge cases, and redirecting requests. It aims to streamline development workflows by providing a comprehensive tool for API development, testing, and debugging, reducing the need to juggle multiple tools. Requestly also emphasizes collaboration and enterprise-readiness with features like team workspaces, Git synchronization for API collections, role-based access control, and robust security measures including SOC-II compliance, SSO, and data encryption. It positions itself as a powerful, open-source alternative to more 'bloated' closed-source solutions, offering a fast, flexible, and secure environment for API development and debugging.

[View details](https://toolradar.com/tools/requestly) [Visit website](https://requestly.io)

Thanks, your review is with our moderators.Used Requestly? Rate it

- Pro: Free and open-source, offering a cost-effective solution.
- Pro: Lightweight and fast, designed for quick operations.
- Pro: Comprehensive features for both API testing and web debugging.

- Con: Requires a desktop and desktop browser for full functionality.
- Con: Desktop app currently only explicitly mentioned for Mac, implying limited cross-platform desktop support.

### Accessibility Insights

100% free

Solve accessibility issues in web and Windows applications before they reach your customers.

Accessibility Insights is a set of open-source tools designed to help developers find and fix accessibility issues in both web and Windows applications. It offers a browser extension for Chrome and Microsoft Edge, and a desktop application for Windows, enabling comprehensive accessibility testing. The tools are built to integrate seamlessly into development workflows, providing quick checks like FastPass to identify common, high-impact issues within minutes, as well as more in-depth assessment capabilities. It's ideal for developers, QA testers, and anyone involved in building software who wants to ensure their products are inclusive and compliant with accessibility standards like WCAG 2.1 AA.

[View details](https://toolradar.com/tools/accessibility-insights) [Visit website](https://accessibilityinsights.io)

Thanks, your review is with our moderators.Used Accessibility Insights? Rate it

- Pro: Free and open-source
- Pro: Easy to use for developers
- Pro: Quickly identifies common, high-impact issues

- Con: Requires some HTML skills for full web assessment
- Con: Telemetry data collection (optional)

### Checkbot

Free plan

Boost your website's SEO, speed, and security with comprehensive auditing.

Checkbot is a powerful Chrome extension designed to audit websites for over 50 best practices related to SEO, web speed, and security. It can crawl hundreds of pages in minutes, identifying issues such as broken links, duplicate content, invalid HTML, insecure forms, redirect chains, and more. The tool provides immediate feedback, allowing users to catch critical problems during development before they impact users or search rankings. This tool is ideal for web developers, SEO specialists, product managers, and anyone involved in website optimization. It helps save time on manual testing by effortlessly and reliably checking numerous pages, uncovering hard-to-spot problems that might otherwise be missed. Checkbot also offers in-app guidance to explain identified issues, why they are important, and how to fix them, making it accessible even for those new to website optimization. It supports testing of unlimited sites, including local development and password-protected pages, ensuring continuous website health.

[View details](https://toolradar.com/tools/checkbot) [Visit website](https://www.checkbot.io) [Checkbot alternatives →](https://toolradar.com/alternatives/checkbot)

Thanks, your review is with our moderators.Used Checkbot? Rate it

- Pro: Fast and efficient website auditing
- Pro: Comprehensive checks covering SEO, speed, and security
- Pro: Provides actionable guidance for fixes

- Con: Requires Chrome browser as it's an extension

Good value

Checkbot offers a fair pricing structure, especially with its generous free tier for basic needs.

### Web Vitals

Free plan

Core performance metrics by Google

Web Vitals measures user experience metrics. Core Web Vitals from Google-the metrics that matter for search and users. The metrics are Google's standard. The measurement is accurate. The optimization is guided. Sites wanting to improve user experience track Web Vitals for Google's key metrics.

[View details](https://toolradar.com/tools/web-vitals) [Visit website](https://web.dev/vitals)

Thanks, your review is with our moderators.Used Web Vitals? Rate it

- Pro: Performance metrics
- Pro: Google standard
- Pro: Good library

- Con: Learning curve
- Con: Implementation needed

Great value

The pricing for Web Vitals is exceptionally fair and generous, as it is offered completely free of charge.

Watch out

No advanced features like historical data storage.

### Opera Neon

Paid

Your agentic browser for research, comparison, and output

Opera Neon is Opera's agentic browser. It reads the page, keeps tab and source context, and can research, compare, and produce output you can send. Neon Do runs different agents (agenda, browse, deep research, documents). You can connect existing agents through MCP or CLI. Browser basics stay: tab management, ad blocking, VPN, snapshots. Agentic features and top LLMs unlock at a paid tier after you install and sign in.

[View details](https://toolradar.com/tools/opera-neon) [Visit website](https://operaneon.com) [Opera Neon alternatives →](https://toolradar.com/alternatives/opera-neon)

Thanks, your review is with our moderators.Used Opera Neon? Rate it

- Pro: Integrates AI agents directly into the browser, streamlining research and content creation
- Pro: Extensible via MCP and CLI, allowing custom workflows and tool connections
- Pro: Includes essential browser features like tab management, ad blocking, and VPN out of the box

- Con: Advanced agentic features require a paid subscription
- Con: Relatively new product, so the agent ecosystem and integrations may still be evolving

Good value

At $19.90/month for a single tier with agentic capabilities and top LLMs, this is a fair price for users who want a ready-to-use AI agent without managing API keys or infrastructure.

### Agent Browser

100% free

AI agents control real browsers via token-efficient ASCII wireframes

Agent Browser enables AI agents to navigate, click, type, and interact with real web browsers using ASCII wireframes, a text-based representation where interactive elements are numbered for efficient token usage. Instead of processing heavy screenshots, AI models receive structured wireframes that maintain semantic clarity while minimizing cost and latency. Built on Playwright, it integrates with MCP clients (Claude Desktop, Cursor), the Vercel AI SDK, and offers an interactive CLI for manual testing.

[View details](https://toolradar.com/tools/agent-browser) [Visit website](https://agent-browser.io)

Thanks, your review is with our moderators.Used Agent Browser? Rate it

- Pro: Token-efficient: ASCII wireframes use far fewer tokens than screenshots
- Pro: Open source and free to use
- Pro: Works with multiple AI platforms (Claude, Cursor, Vercel AI SDK)

- Con: Experimental, API may change between versions
- Con: Requires Playwright setup and headless browser overhead

Great value

The pricing for Agent Browser is exceptionally generous, as it is entirely free through its Open Source tier.

### ModHeader

Free plan

Modify HTTP request and response headers directly from your browser for web development and debugging.

ModHeader is a popular browser extension designed to help web developers and QA engineers modify HTTP request and response headers. It allows users to easily add, modify, or remove headers such as authorization, set-cookie, and custom headers, directly within their browser. This functionality is crucial for tasks like simulating different user environments, testing API endpoints, debugging web applications, and verifying security policies. The extension streamlines the development workflow by enabling quick changes to header values without needing to alter server-side code or proxy configurations. It's particularly useful for testing various scenarios like different IP addresses, locales, CORS issues, and feature flags. By providing granular control over HTTP headers, ModHeader helps in faster debugging, reducing the time spent on identifying and fixing header-related issues, and ultimately minimizing production bugs. Beyond header modification, ModHeader also offers related tools like a header tester to inspect current request/response headers, and editors for Content-Security-Policy (CSP) and Permissions-Policy headers. These additional tools further empower developers to ensure web application security and functionality.

[View details](https://toolradar.com/tools/modheader) [Visit website](https://modheader.com) [ModHeader alternatives →](https://toolradar.com/alternatives/modheader)

Thanks, your review is with our moderators.Used ModHeader? Rate it

- Pro: Simplifies web development and debugging by allowing quick header modifications.
- Pro: Helps simulate various user environments and edge cases.
- Pro: Reduces debugging time and potential production bugs.

- Con: Primarily a browser extension, may not cover all advanced network debugging needs.

Great value

ModHeader offers a very fair and generous pricing structure, especially for individual developers.

Watch out

Monthly billing is double annual ($4 vs $2).

10

### KanjiLens

Free plan

Unlock Japanese by learning kanji directly from manga and novels through an immersive browser extension.

KanjiLens is a browser extension designed to help Japanese learners master kanji through immersion. It allows users to read their favorite manga and novels online, providing instant kanji lookup by hovering over any character to see its reading and meaning. This eliminates the need to break reading flow for dictionary lookups. The tool also features one-click image translation, utilizing OCR technology to seamlessly translate text within manga panels and other images, making raw Japanese content more accessible. An integrated Spaced Repetition System (SRS) allows users to save new words to personalized flashcard decks, aiding long-term memory retention. Additional features include right-click scanning, custom mnemonics, and customizable settings, making it ideal for anyone looking to learn Japanese by engaging with native content.

[View details](https://toolradar.com/tools/kanjilens) [Visit website](https://kanjilens.com)

Thanks, your review is with our moderators.Used KanjiLens? Rate it

- Pro: AI-powered kanji recognition
- Pro: Learn Japanese characters visually
- Pro: Camera-based character lookup

- Con: Japanese language specific
- Con: Recognition accuracy varies

Good value

KanjiLens offers a fair and accessible pricing structure, especially with its generous Free tier.

## Why other browser devtools didn't make our top 10

We evaluated 34 tools in this category and these 20 ranked 11 through 30. They're solid options that fell short on one or two axes (review depth, pricing transparency, feature parity), but worth a look if the leaders don't fit your stack or budget.

[ChatHopTransfer AI chat context between services with one click](https://toolradar.com/tools/chathop)[bmuxSplit browser panes for humans and agents](https://toolradar.com/tools/bmux)[Edge Light for video callsVirtual ring light browser extension to enhance your appearance in video calls.](https://toolradar.com/tools/edge-light-for-video-calls)[Screen RulerMeasure, inspect, and extract web elements with precision](https://toolradar.com/tools/screen-ruler)[MiroMiro v2Copy CSS, Tailwind, Lottie, and design tokens directly from any website.](https://toolradar.com/tools/miromiro-v2)[Omi A11YYour friendly guide to a web that works for everyone, scanning webpages for accessibility issues.](https://toolradar.com/tools/omi-a11y)[HighlightGPTEnhance ChatGPT with highlight-to-ask capabilities directly in your browser.](https://toolradar.com/tools/highlightgpt)[LoupeKitLocal page inspector, Free plus Pro at €6.99/mo or €74.99 lifetime](https://toolradar.com/tools/loupekit)[SigmaOSOrganize tabs like tasks, multitask with split-screen, and get AI answers](https://toolradar.com/tools/sigmaos)[Grayscale for SafariReduce visual noise and make browsing calmer on your Apple devices.](https://toolradar.com/tools/grayscale-for-safari)[BrowserBashPlain-English browser tests driven by an AI agent](https://toolradar.com/tools/browserbash)[tweakEdit headers, redirect URLs, and mock APIs locally in Chrome](https://toolradar.com/tools/tweak)[Rill BrowserBrowse and code with AI agents integrated into your workflow](https://toolradar.com/tools/rill-browser)[EntiScanAudit SEO, structured data, and entities directly in your browser](https://toolradar.com/tools/entiscan)[ReallyFreeFind truly free products and services with color-coded search results](https://toolradar.com/tools/reallyfree)[PulseDevMake frontend edits visually, then review and approve live diffs in-page](https://toolradar.com/tools/pulsedev)[PartytownOffload third-party scripts to a web worker for improved main thread performance.](https://toolradar.com/tools/partytown)[Fake FillerThe quickest way to fill all inputs on a page with fake data for testing forms.](https://toolradar.com/tools/fake-filler)[TinkerfontInspect, replace, and test fonts live on any website](https://toolradar.com/tools/tinkerfont)[Sidekick BrowserThe AI-powered browser for focused work and enhanced productivity.](https://toolradar.com/tools/sidekick-browser)

## Popular browser devtools comparisons

See how the leading browser devtools stack up head-to-head.

- [Dia vs SigmaOS](https://toolradar.com/compare/dia-vs-sigmaos)
- [Perplexity Comet vs SigmaOS](https://toolradar.com/compare/perplexity-comet-vs-sigmaos)
- [Perplexity Comet vs Agent Browser](https://toolradar.com/compare/agent-browser-vs-perplexity-comet)
- [Opera Neon vs Sidekick Browser](https://toolradar.com/compare/opera-neon-vs-sidekick-browser)
- [Opera Neon vs SigmaOS](https://toolradar.com/compare/opera-neon-vs-sigmaos)
- [ModHeader vs Requestly](https://toolradar.com/compare/modheader-vs-requestly)

Compare all 34 browser devtools side by side

## Pricing breakdowns for browser devtools

Real plans and the hidden costs for each tool.

- [Checkbot pricing](https://toolradar.com/tools/checkbot/pricing)
- [Web Vitals pricing](https://toolradar.com/tools/web-vitals/pricing)
- [Opera Neon pricing](https://toolradar.com/tools/opera-neon/pricing)
- [Agent Browser pricing](https://toolradar.com/tools/agent-browser/pricing)
- [ModHeader pricing](https://toolradar.com/tools/modheader/pricing)
- [KanjiLens pricing](https://toolradar.com/tools/kanjilens/pricing)

## Browse all browser devtools tools

34 tools

Pricing

- [100% free](https://toolradar.com/best/browser-devtools?pricing=free#browse)
- [Free plan](https://toolradar.com/best/browser-devtools?pricing=freemium#browse)
- [Paid](https://toolradar.com/best/browser-devtools?pricing=paid#browse)

Platform

- [Web](https://toolradar.com/best/browser-devtools?os=Web#browse)
- [iOS](https://toolradar.com/best/browser-devtools?os=iOS#browse)
- [Android](https://toolradar.com/best/browser-devtools?os=Android#browse)
- [Windows](https://toolradar.com/best/browser-devtools?os=Windows#browse)
- [macOS](https://toolradar.com/best/browser-devtools?os=macOS#browse)
- [Linux](https://toolradar.com/best/browser-devtools?os=Linux#browse)
- [Chrome](https://toolradar.com/best/browser-devtools?os=Chrome#browse)

[ArchifyInstantly reveal web page architecture, frameworks, and components100% free](https://toolradar.com/tools/archify)[WizzyPokeSend screen nudges to friends across popular web apps to grab their attention.Free plan · Chrome](https://toolradar.com/tools/wizzypoke)[ADB WrenchBrowser-based Android debugging tool for seamless development and testing.100% free · Web](https://toolradar.com/tools/adb-wrench)[StealthHoundReal-time tracking & fingerprinting protection to expose and block hidden website tracking.100% free · Chrome](https://toolradar.com/tools/stealthhound)

Showing the top 4 of 34. Filter to narrow down.

## How to choose browser devtools

1. Master built-in devtools firstChrome/Firefox DevTools include Lighthouse, performance profiling, network throttling, coverage analysis, and accessibility checks. Before adding extensions, learn the built-in features deeply, they cover 80% of needs.
2. Add framework devtools per stackReact: React DevTools (essential). Vue: Vue DevTools. Redux: Redux DevTools. Apollo / TanStack Query: respective DevTools panels. Install only what matches your stack; bloat slows the browser.
3. Plan for accessibility toolingaxe DevTools and Lighthouse a11y audits catch common issues but not all. WAVE and manual screen reader testing close the gap. Don't rely on automated tools alone.

## Honorable mentions

Tools that didn't crack the headline list but deserve a look depending on what you optimize for.

- [Lighthouse](https://toolradar.com/tools/lighthouse) Best built-in performance + a11y auditLighthouse (built into Chrome DevTools) provides automated audits for performance, accessibility, SEO, and PWA quality. Free, always available.

## Best Browser DevTools for

- [Browser DevTools for Startups](https://toolradar.com/best/browser-devtools/for/startups)
- [Browser DevTools for Small Businesses](https://toolradar.com/best/browser-devtools/for/small-businesses)
- [Browser DevTools for Freelancers](https://toolradar.com/best/browser-devtools/for/freelancers)
- [Browser DevTools for Students](https://toolradar.com/best/browser-devtools/for/students)
- [Browser DevTools for Solopreneurs](https://toolradar.com/best/browser-devtools/for/solopreneurs)
- [Browser DevTools for Nonprofits](https://toolradar.com/best/browser-devtools/for/nonprofits)

## How we ranked these browser devtools

We rank by real-world signal: G2/Capterra review volume and rating, and media mentions (volume and recency). Pricing is re-checked and the ranking refreshed monthly.

Tools evaluated34 With free plan97% Last updatedOctober 2026

Toolradar Research

## The data behind browser devtools

First-party analyses built from our full catalog, methodology published.

- [Which software categories are actually free](https://toolradar.com/reports/free-software-report-2026)
- [What B2B software really costs per month](https://toolradar.com/reports/saas-price-points-2026)
- [The most crowded software markets](https://toolradar.com/reports/most-crowded-software-markets-2026)

All Toolradar research

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“What is the best browser dev tool for a 5-person team under $50 a month? Give me a short list with prices.”

[Add to Cursor](cursor://anysphere.cursor-deeplink/mcp/install?name=toolradar&config=eyJ1cmwiOiJodHRwczovL3Rvb2xyYWRhci5jb20vYXBpL21jcCJ9)[Add to VS Code](vscode:mcp/install?%7B%22name%22%3A%22toolradar%22%2C%22url%22%3A%22https%3A%2F%2Ftoolradar.com%2Fapi%2Fmcp%22%7D)[Claude, ChatGPT and others](https://toolradar.com/for-agents?src=category)

claude mcp add --transport http toolradar https://toolradar.com/api/mcp

## Frequently Asked Questions

### What is the best browser dev tool in 2026?

Based on our analysis of 34 browser dev tools, Dia is our overall browser dev pick. The next tools on the list are Perplexity Comet, Requestly, Accessibility Insights. Rankings use G2/Capterra review volume and rating, and media mentions.

### What are the top 3 browser dev tools?

The top 3 browser dev tools in 2026, ranked by Toolradar, are: 1) Dia, Your AI-powered browser for focused deep work. 2) Perplexity Comet, An agentic browser that answers questions and takes action across tabs. 3) Requestly, Build, test, and debug APIs faster with a lightweight, open-source API client and web debugger.

### Are there free browser dev tools?

Yes. Dia is our free browser dev pick (100% free, no paid upgrade path). 9 of the 10 tools on this page have a free plan. Among the 34 browser dev tools we rank, 33 have a free plan.

### How do I choose the right browser dev tool?

Start by defining your team size, budget, and must-have features. Dia is our overall browser dev pick. Compare all 34 options side by side on Toolradar.

Cite this page: Toolradar, "Best Browser DevTools in 2026", updated October 2026, https://toolradar.com/best/browser-devtools

[Browser DevTools statistics catalog size, ratings and pricing data, updated monthly](https://toolradar.com/statistics/browser-devtools)

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Source: https://toolradar.com/best/browser-devtools