RetroArch vs RetroHub

RetroArch is a frontend for emulators, game engines, and media players, bringing them under a unified settings system. The RetroArch/Libretro project includes more than 200 cores across those categories. Its menu can group scanned games by system and display thumbnails and animated backgrounds. Common game controllers configure automatically when plugged in, and button actions can also be assigned manually.

Stackable shaders can change rendered graphics or imitate the look of CRT monitors. Built-in netplay supports hosting or joining network gaming sessions, including spectator mode. RetroArch can record gameplay to video files and stream games to Twitch or YouTube. Versions are listed for Windows, Linux, Android, iOS, macOS, and web browsers. RetroArch is free and open source under GPL version 3; the libretro API uses an MIT license. Features differ by platform and store version: the browser edition has lower performance and fewer capabilities than the full version, while Steam lacks Core Updater and thumbnail scraping and offers a selected core set.

RetroHub is a free frontend for organizing, displaying, and launching a retro-game library on Windows, macOS, and Linux. A first-time setup wizard helps configure it, and users can import games and settings from supported frontends. The app supports more than 80 systems and more than 50 emulators, while allowing users to add settings for others; it does not include emulators. Game metadata and media can be customized, and the built-in ScreenScraper feature can identify games by file hash or filename and fetch related information and images. ScreenScraper applies hourly and daily API quotas, and scraped media for a large library may take more than 1 GB of disk space. Users can change themes, and theme development can shape the interface and add features. Inputs include keyboard, mouse, controller, and touch; keyboard and controller actions can be remapped. The interface adapts to screen size and aspect ratio and includes a screen-reader option. RetroAchievements is an optional integration. Source code is MIT-licensed, while official builds use GPLv3 due to bundled third-party libraries.