What are the largest companies that use Selenium for automated testing?

Selenium is indeed a popular tool for automated testing, used by both large companies and startups across various industries. While it's difficult to provide an exhaustive list of all the companies that use Selenium, I can mention some of the prominent ones:

1. Google: Google utilizes Selenium extensively for testing its web applications, including Gmail, Google Search, and Google Drive.

2. Facebook: Facebook employs Selenium for testing its web and mobile applications, such as the Facebook website and the Facebook mobile app.

3. Microsoft: Microsoft incorporates Selenium in its testing frameworks for products like Microsoft Edge, Office 365, and Azure.

4. Amazon: Amazon relies on Selenium for testing its e-commerce platform, as well as services like Amazon Web Services (AWS).

5. Netflix: Selenium is used by Netflix to ensure the quality of its streaming services across various devices and platforms.

6. LinkedIn: LinkedIn utilizes Selenium for testing its professional networking website and related applications.

7. eBay: eBay employs Selenium for testing its online marketplace and related functionalities.

8. Twitter: Selenium is utilized by Twitter for automated testing of its social media platform.

9. IBM: IBM incorporates Selenium in its testing processes for various software products and services.

10. Uber: Uber uses Selenium for automated testing of its mobile and web applications related to ride-sharing and food delivery.

These are just a few examples of well-known companies that use Selenium. However, it's worth noting that the adoption of Selenium is not limited to large companies. Many startups and smaller companies also leverage Selenium due to its versatility, open-source nature, and widespread community support.