DOS-Emulator vs DOS Wasm X

DOS-Emulator is a free IBM PC emulator that runs DOS and is written in Rust. Source code is available under the MIT License, and users can build it with Cargo or download a prebuilt binary from GitHub releases. The README identifies macOS and Ubuntu Linux as supported hosts; Windows lacks the ANSI escape sequences required by its CLI dependency. The project is inspired by DOSBox but is not a direct port, and many features are implemented differently or absent. Only Game of ROBOT episodes 0, 1, 3, and 4 are known to be playable. Its command-line interface can quit, pause into a debugger, or open a keyboard-mapping tool. The debugger profiles instructions, inspects register-selected data, scrolls its overview, and supports continue, step-over, and single-step actions. The architecture separates video and input on a GUI thread from audio synthesis for Sound Blaster and beeper signals. The latest listed release is v0.1.0.

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.