Software Alternatives, Accelerators & Startups

BrowserStack VS Responsive Website Tester

Compare BrowserStack VS Responsive Website Tester and see what are their differences

BrowserStack logo BrowserStack

BrowserStack is a software testing platform for developers to comprehensively test websites and mobile applications for quality.

Responsive Website Tester logo Responsive Website Tester

Test site layout styling with our free responsive website tester tool. Check mobile views, laptop screens, and custom display resolutions online.
  • BrowserStack Landing page
    Landing page //
    2025-05-06

BrowserStack is a leading software testing platform powering over two million tests every day across 15 global data centers. With BrowserStack, developers can comprehensively test their websites and mobile applications across 2,000+ real mobile devices and browsers in a single cloud platformโ€”and at scale. BrowserStack helps Tesco, Shell, NVIDIA, Discovery, Wells Fargo, and over 50,000 customers deliver quality software at speed.

  • Responsive Website Tester Tool Interface
    Tool Interface //
    2026-07-16
  • Responsive Website Tester Tablet Preview
    Tablet Preview //
    2026-07-16
  • Responsive Website Tester Mobile Preview
    Mobile Preview //
    2026-07-16

Responsive Website Tester is a free browser-based web application for testing responsive web design across multiple screen sizes.

Developers, designers, website owners, and SEO professionals can preview websites using common desktop, laptop, tablet, and smartphone resolutions without installing software.

Features include custom viewport sizes, popular device presets, responsive layout testing, and instant website previews directly in the browser.

The tool works online and is available on Windows, macOS, Linux, ChromeOS, and mobile devices through any modern web browser.

BrowserStack

$ Details
freemium $29.0 / Monthly (Starts at single user plans and billed annually)
Platforms
Mac OSX Android Windows Browser Web iOS Google Chrome Firefox Safari REST API Internet Explorer
Release Date
2012 September
Startup details
Country
Ireland
State
Dublin
City
Dublin
Founder(s)
Nakul Aggarwal
Employees
500 - 999

BrowserStack features and specs

  • Cloud-based
  • Browser Extensions
  • SaaS

Responsive Website Tester features and specs

  • Responsive Design Testing
    Custom Screen Sizes
  • Multiple Formats
    Mobile Preview, Tablet Preview, Desktop Preview
  • Instant Results
    No Installation Required
  • Easy Access
    No Sign Up Required

Analysis of BrowserStack

Overall verdict

  • Overall, BrowserStack is considered a highly effective and reliable tool in the web development and testing community. Its extensive features, real-device testing capabilities, and seamless integration make it a good choice for those needing comprehensive cross-browser testing solutions.

Why this product is good

  • BrowserStack is a robust and widely used web testing platform that provides developers with the ability to test their websites and applications across a vast array of browsers and devices. It offers real device cloud testing, ensuring that users can assess how their applications perform on actual devices rather than simulations. This makes it an invaluable tool for identifying and resolving cross-browser compatibility issues. Additionally, it integrates with popular CI/CD tools, enhancing the workflow efficiency for development teams.

Recommended for

  • Web developers
  • QA engineers
  • Agile development teams
  • Companies needing cross-browser testing across multiple devices
  • Teams looking for CI/CD integration in their testing process

Analysis of Responsive Website Tester

Overall verdict

  • Responsive Website Tester by websitegeek.net is a solid, no-frills tool for quickly checking how a website renders across different screen sizes and devices, making it a handy free utility for basic responsive design checks.

Why this product is good

  • Free and easy to use with no installation required
  • Simple interface that lets you preview a site across multiple device dimensions quickly
  • Useful for catching obvious layout or responsiveness issues before deeper testing
  • No account or sign-up needed for quick checks

Recommended for

  • Web developers doing quick responsiveness sanity checks
  • Freelancers and small business owners testing their own sites
  • Designers wanting a fast visual preview across device sizes
  • Beginners who need a lightweight tool without complex QA software

BrowserStack videos

BrowserStack Overview

More videos:

  • Tutorial - SpeedLab by BrowserStack
  • Review - SharePoint Team Finds BrowserStack Invaluable

Responsive Website Tester videos

No Responsive Website Tester videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to BrowserStack and Responsive Website Tester)
Website Testing
98 98%
2% 2
Frontend Development
0 0%
100% 100
Browser Testing
100 100%
0% 0
Automated Testing
100 100%
0% 0

Questions & Answers

As answered by people managing BrowserStack and Responsive Website Tester.

What makes your product unique?

Responsive Website Tester's answer:

It offers instant, sideโ€‘byโ€‘side previews across multiple devices and screen sizes, making it faster and more intuitive than traditional manual testing.

Why should a person choose your product over its competitors?

Responsive Website Tester's answer:

Itโ€™s lightweight, browserโ€‘based, and requires no installationโ€”ideal for quick checks without complex setup.

How would you describe the primary audience of your product?

Responsive Website Tester's answer:

Web developers, designers, and SEO specialists who need to validate mobileโ€‘friendly layouts efficiently.

What's the story behind your product?

Responsive Website Tester's answer:

It was created to simplify responsive testing by eliminating the need for multiple physical devices or heavy software.

Which are the primary technologies used for building your product?

Responsive Website Tester's answer:

Built with HTML, CSS, and JavaScript, leveraging modern browser APIs for accurate viewport simulation.

Who are some of the biggest customers of your product?

Responsive Website Tester's answer:

Freelance developers, digital agencies, and small businesses optimizing their websites for mobile audiences.

User comments

Share your experience with using BrowserStack and Responsive Website Tester. For example, how are they different and which one is better?
Log in or Post with

Reviews

These are some of the external sources and on-site user reviews we've used to compare BrowserStack and Responsive Website Tester

BrowserStack Reviews

Other alternatives to Tuskr
BrowserStack lets you test your website or app on actual phones, tablets, and browsers so you see exactly how it will work in real life. It also includes some basic test management features.
Source: testpad.com
Top Selenium Alternatives
BrowserStack is another leading cloud-based testing platform that offers access to a vast array of browsers and real mobile devices. It's designed to simplify the testing process by allowing tests to run in parallel across different environments, significantly reducing the time needed for comprehensive testing. BrowserStack features include live, interactive testing,...
Source: bugbug.io
Why choose HeadSpin over BrowserStack?
Companies like HeadSpin and BrowserStack play a significant role in fulfilling the demand for testing on real devices and cross-browser devices. Their ability to test on real devices online and monitor digital experiences adds to the value proposition of organizations implementing testing solutions. However, every company has different requirements and here are a few reasons...
Source: www.headspin.io

Responsive Website Tester Reviews

We have no reviews of Responsive Website Tester yet.
Be the first one to post

Social recommendations and mentions

Based on our record, BrowserStack seems to be more popular. It has been mentiond 8 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

BrowserStack mentions (8)

View more

Responsive Website Tester mentions (0)

We have not tracked any mentions of Responsive Website Tester yet. Tracking of Responsive Website Tester recommendations started around Jul 2026.

What are some alternatives?

When comparing BrowserStack and Responsive Website Tester, you can also consider the following products

TestMu AI (Formerly LambdaTest) - Worldโ€™s first full-stack Agentic AI Quality Engineering platform.

Responsively - Develop responsive web-apps 5x faster!

Sauce Labs - Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.

Responsinator - Designed to test responsive websites on different devices.

CrossBrowserTesting - Browser Testing made simple! Run automated, visual, and manual tests on 1500+ real browsers and mobile devices. Test more browsers, in less time.

MobileView.app - A free Chrome extension that shows your site on desktop and mobile at the same time, in one tab โ€” with synced scrolling, device-framed screenshots, and screen recording for responsive design work.