The Acid3 Test Alternatives & Competitors

HTML5test is a platform that assigns you a score based on how well your browser follows the requirements of the HTML5 standard.

Key HTML5test features:

Comprehensive Assessment User-Friendly Interface Cross-Browser Comparison Regular Updates

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

Connect your tools into a living knowledge graph. Sugarbug captures every signal to deliver compounding insights and unified context.

Key Sugarbug features:

Living Knowledge Graph 9+ Integrations Meeting Prep People Profiles

Try for free freemium $16.0 / Monthly

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)

Browsershots makes screenshots of your web design in different browsers.

Key Browsershots features:

Wide Browser Coverage Free to Use Screenshot Capability No Installation Required

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

ietester is an application that allows to test on multiple ie versions at the same time in the same application.

Key IETester features:

Multiple IE Versions Free Tool Easy Installation

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

Embeddable HTML/CSS/script engine.

Key Sciter features:

Lightweight Self-contained Good performance Cross-platform

Open Source

Welcome to Medium, a place to read, write, and interact with the stories that matter most to you.

Key Medium features:

User-Friendly Interface Built-in Audience Publishing Tools SEO Benefits

Open Source

PHP builder application which uses a combination of a powerful editor and drag & drop to make...

Key Servo features:

High-Performance Parallelization Memory Safety Modularity

Open Source

Compatibility tables for support of HTML5, CSS3, SVG and more in desktop and mobile browsers.

Key Can I use features:

Comprehensive Data User-Friendly Interface Regular Updates Global Usage Statistics

Open Source

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