Foxol vs QEMU

Foxol is an emulator platform for playing classic games across web, mobile, and desktop. It lists support for systems such as Game Boy, Game Boy Color, Game Boy Advance, Nintendo DS, Virtual Boy, WonderSwan, Nintendo 64, Sega Genesis, and PlayStation. Cloud sync lets players continue across devices. Multiplayer options include remote co-op, local multiplayer for up to four players, Link Cable, community-powered Nintendo WFC, and simulated infrared. Gameplay tools include cheats, rewind, save states, and fast forward; users can choose from more than 300 shader presets. Foxol also provides a ROM patcher, save editor, skin builder, and community skin catalog. RetroAchievements features include achievement browsing, live unlock notifications, and per-game challenges; RetroAchievements is an independent third-party service. The free plan costs nothing and allows 20 games, two manual save-state slots and two rotating auto-save slots per game, and 2× fast forward. Foxol Plus costs €3.99 a month or €39.99 a year, with unlimited games and manual save states.

QEMU is a free, open-source machine emulator and virtualizer. System emulation models an entire machine, including its CPU, memory and devices, so it can run a guest operating system. User-mode emulation runs processes built for one CPU architecture on another. The package also includes qemu-img, a command-line utility for creating, converting and modifying disk images. QEMU can work with KVM, Xen and Hypervisor.Framework so guests can run directly on the host CPU. Supported build platforms include Linux, macOS, FreeBSD, NetBSD, OpenBSD and Windows. Windows support is limited to 64-bit, while macOS requires the newest version currently available; support for the prior version is eventually dropped. For complex networking and storage configurations, the project recommends management tools such as virt-manager. Its security guidance distinguishes virtualization with an accelerator and listed machine type from TCG non-virtualization use, which does not provide guest-isolation or security guarantees. QEMU is released under GNU GPL version 2, with some components under specific licenses.