ngrok

ngrok provides a cloud‑based gateway that creates secure tunnels from local environments to public URLs, allowing developers to expose services without modifying firewalls. It routes, transforms, and authenticates traffic using configurable endpoints and a CEL‑based traffic‑policy language, enabling actions such as OAuth enforcement, IP filtering, and request rewriting at various stages of the request lifecycle.

The platform also serves as an API and AI gateway, offering features for delivering and protecting APIs, connecting to AI models, and managing device‑to‑cloud communication, including SSH and RDP access to remote devices. By consolidating functions typically handled by nginx, load balancers, VPNs, and other networking tools, it simplifies the workflow for testing webhooks, previewing CI builds, and accessing remote Kubernetes clusters.

Designed for developers who need to quickly share local applications, debug traffic, or integrate AI services, ngrok operates as a command‑line tool and a cloud service, supporting Docker deployment and providing documentation for setup across various environments.