Nearcade vs Romulus ROM Manager

Nearcade is a free, open-source, self-hosted platform for playing local co-op games over the internet with friends. A host runs the game, while viewers join from a desktop or mobile web browser without installing a client. Streaming uses WebCodecs or WebRTC and peer-to-peer connections. Hosts can allow gamepad input, raw keyboard and mouse, or keyboard and mouse mapped to a virtual gamepad; mobile viewers get touch controls and a virtual joystick. Sessions can use private Cloudflare or Zrok tunnels, or appear in the public Nearcade Arcade lobby. Public Arcade sessions are limited to 80 minutes and require a verified tunneling provider. A host needs Node.js 18 or newer and Python 3. Linux also requires PipeWire and the uinput module, while Windows gamepad support requires ViGEmBus. Linux is listed as production-stable; Windows and macOS are experimental, and macOS lacks gamepad support. The project is published under GPL-3.0 and provides setup, usage, API, and VPS server documentation.

Romulus ROM Manager has no write-up on Specifiction yet; its figures are above.