Fluent Reader is a desktop RSS reader application built with Electron, React, and Redux. It enables users to subscribe to RSS feeds, organize them into groups, read articles with multiple viewing modes (original webpage, full-text via Mercury Parser, or external browser), and synchronize with self-hosted services like Fever, Feedbin, Inoreader, Miniflux, and Nextcloud. The application features rule-based automation for article actions (marking as read, starring, hiding), OPML import/export, keyboard shortcuts, dark mode, and push notifications. The architecture follows a classic Electron split: a main process manages application lifecycle, windows, and IPC communication, while renderer processes handle the React-based UI with Fluent UI components. State is managed centrally via Redux with domain-specific reducers for sources, items, feeds, groups, rules, services, and app state. Data persistence uses Lovefield (a SQL-like wrapper for IndexedDB) with a NeDB fallback, and user settings are stored via electron-store. Key entry points include src/electron.ts (main process), src/index.tsx (renderer root), and src/preload.ts (context bridge for secure main-renderer communication). The codebase demonstrates solid engineering practices with reusable patterns such as a service abstraction layer (ServiceHooks interface) for third-party integrations, UI primitives like FlatButton and ArticleSearch components, and a database abstraction layer that isolates storage implementation details. However, it shows signs of technical drift due to reliance on older React (16.13.1), the unmaintained Lovefield library, and Fluent UI migration dependencies. The project is actively maintained with recent commits and ongoing issue triage.