Compare software

RetroArch Web PlayerJavatari
Free

The open-source software is available without a license fee.

 Free

Free to use in the browser.

Web Web
  • No installation at all; it runs in any modern browser
  • Uses the same libretro cores as the desktop application
  • Runs in a browser with no install
  • Supports many 2600 cartridge formats
  • Slower than native and limited to lighter systems
  • Save handling and controller support are more fragile than the desktop app
  • Covers only the Atari 2600
  • Copyright notice dates from 2015, so updates may be infrequent
Web application Web application
Open source Closed source
License not stated License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.