SLRP is a rotating open proxy multiplexer that automatically discovers, validates, and rotates proxies from dozens of online sources. It runs as a single Go binary with an embedded Web UI and provides both a REST API and an MITM HTTP/HTTPS proxy endpoint. Internally, it uses a modular architecture with components for source scraping, proxy checking, pool management, request history recording, and IP geolocation. It features a custom query language for filtering proxy pool, history, and blacklist data, and includes a code generator to create type-safe dataset accessors from Go struct definitions. The system persists state to disk and can be configured via YAML or environment variables.