1. Key Difference 1: Pricing Model - Applitools offers a subscription-based pricing model, where customers pay a monthly fee based on their usage levels and the number of visual tests executed. On the other hand, BrowserStack offers a usage-based pricing model, where customers pay for the hours of usage on their virtual machines and browsers. This allows customers to choose a pricing model that best fits their budget and usage requirements.
2. Key Difference 2: Integration with Test Automation Frameworks - Applitools provides seamless integration with popular test automation frameworks like Selenium and Appium, allowing developers to easily incorporate visual testing into their existing test scripts. BrowserStack, on the other hand, also supports integration with Selenium and Appium, but it also offers built-in support for additional test automation frameworks like TestNG and JUnit. This provides customers with more flexibility and options when it comes to choosing their preferred test automation framework.
3. Key Difference 3: Scalability and Device Coverage - Applitools offers a cloud-based testing platform that provides scalable infrastructure to run tests across a wide range of devices, browsers, and screen resolutions. It also provides AI-powered visual testing capabilities to ensure consistent and accurate results across different environments. BrowserStack, on the other hand, is known for its extensive device and browser coverage, with support for over 2000 real devices and browsers. This makes it a preferred choice for customers who require a broad range of device and browser coverage.
4. Key Difference 4: Collaborative Testing Tools - Applitools provides a collaborative testing platform that allows teams to easily share and manage test results, collaborate on issues, and track the progress of their visual testing efforts. It also provides features like Baseline Management and Smart Test Analyzer to help teams efficiently manage and analyze their visual tests. BrowserStack, on the other hand, offers a collaborative testing tool called App Live, which allows teams to test and debug their mobile apps in real-time. This makes it a preferred choice for teams that require real-time collaboration during the testing process.
5. Key Difference 5: Support and Documentation - Applitools offers a comprehensive support package, including 24/7 technical support, documentation, and a vibrant community forum where users can ask questions and get help from other users. It also provides extensive documentation and tutorials to help users get started with visual testing. BrowserStack also provides 24/7 technical support, along with detailed documentation and tutorials. However, it also offers a dedicated Customer Success Manager for enterprise customers to provide personalized support and assistance. This makes it a preferred choice for customers who require dedicated support and personalized assistance.
6. Key Difference 6: Testing Environments - Applitools supports cross-browser and cross-device testing, allowing customers to test their applications on various browsers, operating systems, and screen sizes. It also provides support for testing mobile apps on real devices and simulators/emulators. BrowserStack, on the other hand, offers a broader range of testing environments, including support for mobile testing on real devices, simulators/emulators, and even physical devices connected to a remote cloud. This provides customers with more options and flexibility when it comes to testing their applications across different environments.

In Summary, Applitools is known for its subscription-based pricing model, seamless integration with popular test automation frameworks, scalable infrastructure, and collaborative testing tools. On the other hand, BrowserStack is known for its usage-based pricing model, extensive device and browser coverage, real-time collaborative testing capabilities, dedicated support, and a broader range of testing environments.