Javatari
- Android app
- Yes
- Free plan
- Yes
- Runs on
- Android, api, iOS, self-hosted, Web
Summary
Javatari is a free, cross-platform Atari 2600 emulator designed for the Web. Users can load cartridges in the browser, with ROMs opened from local storage, iCloud, Google Drive, Dropbox, or web links. The emulator runs in browsers tested with Chrome, Firefox, and Safari, and can be installed as a WebApp on iOS, Android, or desktop for offline use. It supports savestates that users can export and share, along with adjustable speed, pause, and frame-by-frame advance. Display tools include a resizable screen, fullscreen mode, screen capture, and debug modes. Controls include customizable joysticks, joykeys, and touch controllers, with haptic feedback on mobile. NetPlay lets multiple users connect to and control the same virtual console over the internet, but it does not work on Apple iOS because required WebRTC technologies are unavailable there. A JavaScript API supports ROM loading and console control. Games can be embedded in webpages or launched through a Javatari page link. NetPlay performance depends on network quality. The project repository identifies the software as licensed under AGPL-3.0.
Who it is for
Javatari suits Atari 2600 players who want to load cartridges in a browser or install the emulator for offline use. It also offers tools for embedding games and controlling the console through JavaScript.
What is good
- Free Atari 2600 emulation.
- Can run offline as an installed WebApp.
- Supports exported and shared savestates.
- Customizable controls include mobile haptic feedback.
- Games can be embedded in webpages.
What to know first
- NetPlay is unavailable on Apple iOS.
- NetPlay performance depends on network quality.
Verdict
Javatari offers browser-based Atari 2600 emulation with offline WebApp use, configurable controls, and savestates. Users who want NetPlay should note its iOS limitation and dependence on network quality.
Javatari plans and pricing
All plansCompared on Atari emulators
- Free plan
- Yesjavatari.org
- Atari systems
- Atari 2600javatari.org
- Supported platforms
- Web, iOS, Androidjavatari.org
- Save states
- Yesjavatari.org
- Netplay
- Yesjavatari.org
- Controller remapping
- Yesjavatari.org
Facts
- Product
- Javatari is a cross-platform Atari 2600 emulator designed for the Web.github.com · 1 Oct 2026
- Online use
- The official site provides an online Atari 2600 emulator with cartridge loading in the browser.javatari.org · 1 Oct 2026
- Browser support
- The emulator runs in browsers and is tested in Chrome, Firefox, and Safari.github.com · 1 Oct 2026
- Mobile support
- Javatari supports iOS and Android devices, including iPhone and iPad.github.com · 1 Oct 2026
- Offline use
- It can be installed as a WebApp on iOS, Android, or desktop and run offline.github.com · 1 Oct 2026
- NetPlay limit
- NetPlay does not work on Apple iOS because the required WebRTC technologies are unavailable there.github.com · 1 Oct 2026
- File sources
- ROMs can be opened from local storage, iCloud, Google Drive, Dropbox, or web links.github.com · 1 Oct 2026
- Developer API
- A JavaScript API is provided for loading ROMs and controlling the console.github.com · 1 Oct 2026
- Embedding
- Games can be embedded in webpages or launched with a single link to a Javatari page.github.com · 1 Oct 2026
- Controls
- Javatari offers customizable joysticks, joykeys, and touch controllers, plus haptic feedback on mobile.github.com · 1 Oct 2026
- NetPlay networking
- NetPlay uses a specialized peer-to-peer protocol with STUN for NAT and router traversal, and performance depends on network quality.github.com · 1 Oct 2026
- License
- The project repository identifies the software as licensed under AGPL-3.0.github.com · 1 Oct 2026
- Creator
- The official site credits Paulo A. Peccin as the creator.javatari.org · 1 Oct 2026
- What it does
- Javatari is an online Atari 2600 emulator.javatari.org · 1 Oct 2026
- Browser technology
- It is a cross-platform HTML5/JavaScript emulator that runs in browsers tested with Chrome, Firefox and Safari.github.com · 1 Oct 2026
- Touch controls
- Mobile touch controls are customizable and include haptic feedback.github.com · 1 Oct 2026
- Playback controls
- The emulator provides adjustable speed, pause and frame-by-frame advance.github.com · 1 Oct 2026
- Display tools
- It includes screen capture, debug modes, a resizable screen and fullscreen mode.github.com · 1 Oct 2026
- JavaScript API
- A JavaScript API is available for loading ROMs and controlling the console.github.com · 1 Oct 2026
- NetPlay limitation
- NetPlay does not work on Apple iOS because the required WebRTC technologies are unavailable there.github.com · 1 Oct 2026
- Maker
- Javatari was created by Paulo A. Peccin.javatari.org · 1 Oct 2026
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Sources
- github.com/ppeccin/javatari.js· checked 1 Oct 2026
- javatari.org· checked 1 Oct 2026
- alternativeto.net/software/javatari/about/· checked 1 Oct 2026