apple2js review

Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

apple2js is an open-source JavaScript emulator for Apple II and Apple IIe systems, running in an HTML5-capable browser. It suits people who want to explore Apple II software without installing a native emulator, especially solo users comfortable selecting a machine configuration and supplying disk images. The interface covers original, autostart, and Plus Apple II variants, plus enhanced and unenhanced Apple IIe configurations. Familiarity with the original computers is helpful when choosing among those options.

Pricing is straightforward: apple2js is free, with no paid tiers described. That makes it suitable for casual exploration, classroom demonstrations, and personal preservation projects where a browser-based tool is preferable. Setup can remain lightweight because disk images load through the interface from local files or URLs, including drag-and-drop input. The project also provides instructions for building and running a local development server, which gives technically inclined users a path to a local instance while keeping the primary experience in the browser.

Its strongest practical depth is around disk and peripheral handling. Users can save disk contents in the browser or download them locally, use a browser-based printer interface, and download raw printer output. Basic joystick support works through the browser Gamepad API, though documented browser limitations affect that experience. The feature set is focused on emulation rather than debugging or session save states, and disk image support centers on .dsk files. Choose apple2js for accessible Apple II and IIe use in a browser; choose another emulator when debugging tools, save states, or wider image-format coverage are priorities.

apple2js pros and cons

• Where it wins
  • Runs Apple II and Apple IIe configurations in an HTML5-capable browser
  • Loads .dsk disk images from local files, URLs, or drag and drop
  • Saves disk contents in-browser or as local downloads
• Where it doesn't
  • No debugger or emulator session save states
  • Disk image support is centered on .dsk files
  • Joystick input is basic and depends on browser Gamepad API limits

apple2js fact sheet, pricing and score →

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Last updated 14 Nov 2026 · How we research and update