Sizzy Alternatives & Competitors

The browser for ambitious web developers that want to 5× their quality and efficiency.

Key Polypane features:

Multi-View Testing Live Reloading Developer Tools Integration Accessibility Checks

paid Free Trial $9.0 / Monthly (Individual user)

Live interactive cross-browser testing from your browser.

Key browserling features:

Cross-Browser Testing Live Interaction No Installation Security

The all-in-one Screenshot API for developers: capture websites, generate PDFs, record videos, and automate it all with powerful, scalable infrastructure. No browser setup, no hassle. Just clean results, fast.

Key ScreenshotMAX features:

Annoyance Blocking Scheduled Screenshot Tasks Full-Page Screenshot Rendering HTML to PDF Conversion

Try for free freemium $19.0 / Monthly

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

Browsershots makes screenshots of your web design in different browsers.

Key Browsershots features:

Wide Browser Coverage Free to Use Screenshot Capability No Installation Required

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

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 $29.0 / Monthly (Starts at single user plans and billed annually)

Develop responsive web-apps 5x faster!

Key Responsively features:

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

Open Source free

litmus tests and tracks your email campaigns, so you can always put your best design forward.

Key Litmus features:

Email Previews Spam Testing Analytics Integration Capabilities

Responsive Web Design, Mobile & Cross-Browser Compatibility Testing Software.

Key MultiBrowser features:

Comprehensive Testing Automation Features Live Testing Local and Cloud Testing

10x faster UI testing without a line of code.

Key Screenster features:

Ease of Use Visual Regression Testing Cloud-Based Team Collaboration

webcheck.me Free online website scanner. Checks security, seo, performance and mail problems.

Key webcheck.me features:

Ease of Use Comprehensive Analysis Quick Reports Accessibility

Test the spamminess of your email.

Key Mail Tester features:

User-friendly Interface Detailed Feedback Free Basic Service Spam and Content Analysis

See every screen, perfect every detail.

Key Pixefy features:

Multiple Viewports Inspect X-Ray Activity Tab

free