Callisto

Eliminates traditional Selenium Grid components by directly creating and managing browser pods in Kubernetes, leading to a leaner, cloud-optimized architecture.

Routes most requests directly to browser pods, proxying only session creation/deletion through Callisto, which reduces latency and improves throughput for large-scale testing.

Supports Chrome DevTools Protocol from version 1.3.0, enabling integration with frameworks like Playwright via the Selenium Grid endpoint for expanded testing capabilities.

Used in production by Wrike to run hundreds of thousands of tests daily, demonstrating proven reliability and scalability in real-world cloud environments.