DOS Wasm X vs DOSBox

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 is a free, open-source DOS emulator for running older programs and games that may not run on newer computers. It emulates 286 and 386 CPUs in real and protected modes, along with XMS and EMS memory. Its graphics support covers Tandy, Hercules, CGA, EGA, VGA, and VESA, while sound emulation includes SoundBlaster and Gravis UltraSound cards. Users can mount floppy and CD-ROM images, including ISO and CUE/BIN formats. DOSBox also supports IPX networking through its internal IPXNET program and can emulate a serial nullmodem cable over a network or the internet. The site identifies version 0.74-3 as the latest version and lists builds or packages for Mac OS X, Windows, Fedora, and Debian, along with source code. Its game compatibility list uses statuses including runnable, playable, and supported. For untrusted files, the site recommends secure mode; that mode disables MOUNT, IMGMOUNT, and BOOT. DOSBox runs on Windows, Linux, and macOS, and the forum is the suggested place to ask about usage or a particular game.