Flycast vs XRoar

Flycast is a free emulator for Sega Dreamcast, Naomi, Naomi 2, and Atomiswave, derived from reicast. It runs on Android, Linux, macOS, and Windows, with releases available as stable tagged versions, master builds, and experimental nightly builds. Android users are directed to Google Play; Linux instructions cover Flatpak and Flathub, while macOS instructions use Homebrew. Windows documentation provides a bootstrap script for building from source. Xbox One and Series users can install a build through Xbox Device Portal. Flycast supports online play, with release notes describing modem-emulation improvements and fixes for online features in several games. Its DCNet service is a free dedicated VPN for Dreamcast games; 30 game servers were available when it was released. Physical Dreamcast controllers work with DreamConn+ and DreamPicoPort adapters. On Android, Google Auto Backup can back up VMU saves and non-volatile memory. The project lists GPL-2.0 as its license and says iOS support has been dropped.

XRoar is a free emulator for Dragon, Tandy Colour Computer, Tandy MC-10, and related 8-bit systems. Supported machines include Dragon 32/64/200-E, Tandy CoCo 1/2/3, MC-10, and Matra & Hachette Alice 4K. It runs on Android, Linux, macOS, and Windows, with XRoar Online available in a browser. The emulator reads and writes cassette, floppy disk, and block-device images, and supports machine snapshots. Emulated hardware includes floppy controllers, sound cartridges, Glenside IDE, and several RAM expansions. Video options include PAL or NTSC emulation and composite video simulation, with multiple sound drivers. A GDB remote target supports interactive debugging, though 6803 debugging is not implemented. The Becker port can communicate with pyDriveWire or Drivewire 4. In the browser version, users can fetch cassette, floppy, and hard disk images from the web or upload local files, but its sandbox keeps accessed files temporarily in memory rather than working transparently with local files. Firmware ROM images are required for useful emulation, and floppy write-back is enabled by default. XRoar is GPL version 3 or later software and comes without warranty.