Uptime Kuma is an easy-to-use self-hosted monitoring tool.

Radically better observability stack

Requestly is an open-source tool that simplifies API development, testing, mocking, and integration for developers and QAs.

Jest is a delightful JavaScript Testing Framework with a focus on simplicity.

Playwright enables reliable end-to-end testing for modern web apps.

LangSmith Observability gives you complete visibility into agent behavior with tracing, real-time monitoring, alerting, and high-level insights into usage.