Traefik

Traefik is an HTTP reverse proxy and load balancer designed for dynamic microservice environments. It watches the APIs of orchestration platforms such as Docker, Swarm, Kubernetes, Consul, etcd, Rancher v2, and Amazon ECS, automatically generating routing rules as services are added, removed, or updated, eliminating the need for manual configuration changes. Users can also define static routes when desired.

The software offers continuous configuration updates without restarts, multiple load‑balancing algorithms, automatic HTTPS via Let’s Encrypt (including wildcard certificates), circuit breakers, retries, and support for WebSocket, HTTP/2, and gRPC. Metrics are exportable to systems like Prometheus and Datadog, and access logs are available in JSON or CLF formats. A clean web UI provides real‑time visibility, and a REST API allows external control.

Traefik is distributed as a single binary and an official Docker image, released under the MIT license, and is self‑hostable, free‑tier, and subscription‑free. It targets DevOps and platform engineering teams that need a cloud‑native, GitOps‑driven proxy or API gateway that integrates with major orchestrators and service registries.