Checkly

Checkly is a developer-first monitoring platform that treats monitoring as code. Built on Playwright and Puppeteer, it allows developers to write their browser checks in JavaScript/TypeScript, making it easy to integrate monitoring into the development workflow. Checkly excels at monitoring both the frontend (browser tests) and the backend (API tests), providing high-frequency checks from data centers around the world. It features a robust CLI and native integrations with GitHub and Terraform, allowing teams to manage their monitoring infrastructure alongside their application code. It is perfect for modern engineering teams looking for a code-based, programmable monitoring solution.