Polypane Alternatives & Competitors

Develop responsive web-apps 5x faster!

Key Responsively features:

Multi-device Preview Open Source Sync Scrolling and Clicks Customizable Viewports

Open Source free

The browser for designers and developers.

Key Sizzy features:

Browser Synchronization Development Tools Integration Customizable Viewports Live Reload

paid $7 / Monthly

Clear, Fast & Unlimited. Residential & Mobile Proxies For Best Price.

Key ASocks features:

HTTP Socks5 ASN targeting Pay as you go

Try for free paid Free Trial $3 (3$ per 1 Gb) Sponsored

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

Key BrowserStack features:

Cloud-based Browser Extensions SaaS

Open Source freemium $29 / Monthly (Starts at single user plans and billed annually)

Live interactive cross-browser testing from your browser.

Key browserling features:

Cross-Browser Testing Live Interaction No Installation Security

LT Browser is a free dev friendly browser for developers and testers. You can see mobile view of website on different screen sizes and resolution on 50+ pre installed view ports. You can build, test and debug your website faster then ever.

Key LT Browser by TestMu AI features:

Responsive Testing Pre-built Device Viewports Local Testing Network Throttling

Download Blisk - a browser for web developers. Blisk is a toolbox for development, debugging and testing: emulation, sync, analytics, and screenshots.

Key Blisk features:

Multi-device emulation Built-in debugging tools Automatic refresh Collaboration features

World’s first full-stack Agentic AI Quality Engineering platform.

Key TestMu AI (Formerly LambdaTest) features:

Selenium Grid For Mobile Web-Automation Testing Selenium Web Testing Automation Parallel Testing For Goto Market Launch API for Continuous Testing

Open Source freemium $15 / Monthly

Browsershots makes screenshots of your web design in different browsers.

Key Browsershots features:

Wide Browser Coverage Free to Use Screenshot Capability No Installation Required

Google Chrome is a fast, secure, and free web browser, built for the modern web. Give it a try on your desktop today.

Key Google Chrome features:

Speed User Interface Extensions Regular Updates

Slow, difficult and unreliable testing for anything that runs in a browser. Install Cypress in seconds and take the pain out of front-end testing.

Key Cypress.io features:

Easy Setup and Configuration Real-time Reloads Time Travel Debugging Automatic Waiting

Open Source

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

Key CrossBrowserTesting features:

Wide Range of Browsers and Devices Live Testing Automated Testing Integration Visual Testing

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

Key Sauce Labs features:

Extensive Browser and OS Coverage Real Device Testing Integration with CI/CD Tools Detailed Reporting

Consultation & Development for Digital Products.