Regex Tester & Validator

This regex matches ChromeOS user agent strings, specifically identifying the OS token ('CrOS', 'Cross', or 'CrossOS') followed by a space and an architecture identifier (e.g., x86_64, armv7, aarch64, amd64). It is case-insensitive and can be used for parsing user agents to detect ChromeOS devices and their CPU architecture, useful in device analytics or platform-specific routing.