DOS Wasm X vs DOSBox Staging

DOS Wasm X is a free, browser-based DOS emulator built around the DOSBox-X codebase and using WebAssembly. It provides virtual hard drive choices of 512 MB, 1 GB, or 2 GB and RAM choices of 32 MB, 64 MB, or 128 MB. The browser stores the drive so users can return later, and it can be exported as an image for local saving. Supported file types include ISO, ZIP, BIN, CUE, IMG, and 7z; users can import and export files and change a CD while the emulator is running. Controls include mobile mode, an on-screen keyboard, gamepad support, full screen, zoom, mouse capture, CPU speed and emulator time settings, and pause and resume. Audio, dark mode, and resolution resizing are also listed. Windows 95 or Windows 98 can be installed with the user's own Windows copy and ISO. The project can be hosted on a web server by copying the dist folder or run in a container using its Docker command. Before leaving after using Windows, shut it down within the guest system to save drive changes.

DOSBox Staging runs MS-DOS and Windows 3.1 software on modern Windows, macOS, and Linux computers through built-in MS-DOS emulation. Its main compatibility goal is PC Booter, DOS, and Windows 3.1 games released from 1981 to 2000. Default settings are intended to let most games and applications work without adjustment, and existing DOSBox configurations remain usable. Graphics options include CRT emulation, aspect-ratio-correct output, VGA and 3dfx Voodoo emulation, and custom shaders. Emulated audio includes Roland MT-32 and SC-55, FluidSynth MIDI, OPL, Gravis UltraSound, and PC speaker sound. Networking includes Ethernet through SLiRP and ENet modem transport. Host features include clipboard integration, physical CD-ROM mounting, high-DPI support, and Windows 3.1 seamless mouse integration. An optional HTTP REST API can inspect or modify emulator state, but it is disabled by default and binds to localhost; exposing it to untrusted networks gives them full control of the emulator. The project says it collects no personal information and makes no network connection unless initiated by the user. It is free for personal use, without warranty, and intended for low-stakes scenarios.