FTB App vs Refract

FTB App is Feed The Beast’s desktop launcher for finding and managing modpacks, then playing them. It is the officially supported way to get FTB modpacks, and it also connects to CurseForge for discovering and installing its packs. The app supports NeoForge, Fabric, and Forge, and lets users create and share their own modpacks or add, remove, and update mods. Packs stay in separate instances, with automatic updates and controls for Java version, arguments, and RAM. Users can install FTB modpack servers through the app or a Linux command line. The app runs on Windows, macOS, and Linux; Windows uses Overwolf, while the other desktop versions use Electron without another background application. It is free to use and contains ads supporting Feed The Beast. Authentication is required to use the app, and playing Minecraft requires a Minecraft account. Its source code is available through GitHub.

Refract is a free launcher for organizing Minecraft modpacks on Windows, macOS, and Linux. It supports modpacks from Modrinth, CurseForge, and FTB, with a built-in catalog for finding compatible content. Multiple mod loaders are supported, and modpack import is available through both listed methods. Each pack runs in a separate instance, with its mods, resource packs, worlds, settings, and launch options kept apart. The launcher can install dependencies, update individual mods in place, manage Java runtimes, and apply automatic updates; worlds are preserved during updates. Existing libraries can be imported without mixing files or damaging saves. Users can choose themes, accent colors, sidebar layouts, Java versions, memory limits, and launch behavior. Refract is licensed under GNU GPL v3.0, and its application and website are developed in public. The project uses Tauri and Rust for its native shell. Discord supports player help and project discussions, while GitHub is used for bug reports, change proposals, and code contributions.