ChromeDriver
WebDriver is an open source tool for automated testing of webapps across many browsers. It provides capabilities for navigating to web pages, user input, JavaScript execution, and more. ChromeDriver is a standalone server that implements the W3C WebDriver standard. ChromeDriver is available for Chrome on Android and Chrome on Desktop (Mac, Linux, Windows and ChromeOS).
You can view the current implementation status of the WebDriver standard here.
Latest ChromeDriver Binaries
Starting with M115 the latest Chrome + ChromeDriver releases per release channel (Stable, Beta, Dev, Canary) are available at the Chrome for Testing availability dashboard. For automated version downloading one can use the convenient JSON endpoints.
The older releases can be found at the Downloads page.
ChromeDriver Documentation
Getting started with ChromeDriver on Desktop (Windows, Mac, Linux)
ChromeOptions, the capabilities of ChromeDriver
Security Considerations, with recommendations on keeping ChromeDriver safe
Troubleshooting
Getting Involved
The chromedriver-users mailing list for questions, help with troubleshooting, and general discussion.
All code is currently in the open source Chromium project. This project is developed by members of the Chromium and WebDriver teams.