n64js vs Provenance

n64js is a free N64 emulator written mostly in pure ES6 JavaScript, with a hosted version on GitHub Pages. It uses WebGL and provides keyboard controls plus a controller-configuration interface. Many ROMs run close to full speed, but graphical problems remain and imprecise cycle counting affects compatibility. Save data can persist through localStorage, with save import and export listed as implemented features. Saving and loading require native Uint8Array base64 methods supported in Chrome or Edge 140+, Firefox 133+, or Safari 18.2+, including iOS. The live site reports Chrome, Firefox, and Safari tested on macOS 13.5; Edge is untested. Low-level audio emulation is implemented, while high-level audio remains in progress. Savestates are listed as a TODO. Debug options include Off, Simple, and Mattias CRT display effects. The MIT-licensed repository also documents Bun scripts for headless emulation and programmatic controller input.

Provenance is a free, open-source retro game emulator frontend for Apple platforms, available for iOS and macOS. It supports more than 38 console systems, including systems from Atari, Nintendo, Sega, and Sony. Its library can display automatically downloaded box art, screenshots, release details, ratings, and scanned manuals. Listed emulation features include save states, cheats, fast forward, shaders, visual filters, controller support, RetroAchievements, and multiplayer. Apple integration includes native tvOS, Apple TV TopShelf, Siri Remote, Spotlight search, Siri shortcuts, and iCloud sync; Apple TV supports MFi, Xbox, and PlayStation gamepads. Nearly all CD-based cores support CHD disc images, and the native Mednafen core has a custom CHD implementation. The source is published on GitHub under the BSD license. Installation options include the App Store, sideloading with AltStore or SideStore, and building from source. The free plan includes emulation features when sideloaded or built from source. Plus adds iCloud sync and priority support.