Rocky

A full-featured, middleware-oriented HTTP/S and WebSocket proxy with traffic replay, load balancing, routing, and retry/backoff. Current stable version is 0.4.16, last updated July 2020. It is built on top of http-proxy and supports both command-line and programmatic usage. Key differentiators include a hierarchical middleware layer, path-based routing with params, concurrent/sequential traffic replay, and connectivity with Connect/Express middleware. Compared to alternatives like http-proxy or http-mitm-proxy, Rocky provides a higher-level abstraction with built-in balancer and retry logic. The project is in maintenance mode; no major releases since 2020.