Plex Rewind is a Next.js web application that provides a personalized year-in-review (Rewind), a real-time activity monitor, and a configurable dashboard for Plex media servers. It ingests data from Tautulli (play history, library stats), Overseerr (content requests), and TMDB (posters, ratings), and authenticates users via Plex OAuth through NextAuth. The architecture is a monolith with server-side rendering, API routes, and a middleware layer that enforces setup requirements and access control. Settings are persisted to a local JSON file. The application supports PWA installation, multi-language i18n (English, Estonian, French, German), and is fully containerized with Docker. The codebase demonstrates strong engineering practices: strict TypeScript, server actions for form handling, React Server Components, motion animations, and a well-organized component hierarchy. It is actively maintained with semantic release automation and CI/CD pipelines.