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OpenDeck

open-deck.org

Free plan Open source WebWindowsmacOSiOSAndroid
Visit open-deck.org
Spec score 8.7 #5 of 25 in Animated Presentation Software

What it is

OpenDeck is a free player for self-contained presentation documents in the `.deck` format. An AI agent can build a deck from a talk description, document, or spreadsheet, including its structure, slides, motion, and voice narration. Decks can also contain toggles, drag-to-reorder controls, and tap-to-reveal interactions. Users can export a `.deck` file for OpenDeck apps or a standalone HTML page. A `.deck` file includes what it needs for playback and can run offline without depending on a server. OpenDeck runs on iPhone, iPad, and Mac; exported HTML decks open in modern browsers on any device. The homepage lists browser and Windows apps as available and says Android is coming soon. Setup options are offered for Claude Code, Claude web, Claude desktop, Antigravity CLI, OpenCode, and Codex. OpenDeck is free forever with no in-app purchases. Its privacy policy says the app collects no personal data and makes no network requests, and that imported decks remain on the device. The app is Apache-2.0 licensed, its authoring kit is MIT licensed, and the `.deck` format is CC0 public domain.

Spec sheet

What it does
OpenDeck creates and plays animated, narrated, interactive HTML presentation decks.Read 15 Oct 2026 · open-deck.org
Purpose
OpenDeck is a player for self-contained presentation documents in the `.deck` format.Read 7 Oct 2026 · open-deck.org
Privacy
The privacy policy says OpenDeck collects no personal data and makes no network requests, using local device or browser storage.Read 15 Oct 2026 · open-deck.org
Support
Support is provided by email at [email protected] and GitHub issue reporting.Read 15 Oct 2026 · open-deck.org
Headquarters
BulgariaRead 28 Sep 2026 · open-deck.org
Agent integrations
The kit supports Claude Code, OpenCode, Codex, Antigravity CLI, and other agents that use SKILL.md.Read 15 Oct 2026 · github.com
AI agent integrations
The site offers setup options for Claude Code, Claude web, Claude desktop, Antigravity CLI, OpenCode, and Codex.Read 7 Oct 2026 · open-deck.org
AI authoring
An AI agent can build a complete deck from a talk description, document, or spreadsheet.Read 15 Oct 2026 · open-deck.org
AI limitation
AI-assisted authoring depends on a third-party model supplied by the user, and generated content is not guaranteed accurate.Read 15 Oct 2026 · open-deck.org
Alternative players
Anyone may implement a .deck player or library in any language without permission or royalties.Read 15 Oct 2026 · open-deck.org
Animated reveals
Slides can reveal ideas progressively with built-in pacing and animation.Read 15 Oct 2026 · open-deck.org
App repository status
The app repository is public, Apache-2.0 licensed, and describes iOS, Android, macOS, and web builds.Read 15 Oct 2026 · github.com
Apple availability
The App Store listing is free, supports iPhone, iPad, and Mac, and requires iOS/iPadOS 15 or macOS 12.Read 15 Oct 2026 · apps.apple.com
Apple seller
Apple identifies Sinisha Djukic as the developer and seller.Read 15 Oct 2026 · apps.apple.com
Authoring-kit licence
The deck-authoring skill kit is licensed under the MIT License.Read 15 Oct 2026 · open-deck.org
Company location
The OpenDeck GitHub organization lists Bulgaria as its location and shows no public members.Read 15 Oct 2026 · github.com
Deck creation
An AI agent can build a deck from a talk description, document, or spreadsheet, including its structure, slides, motion, and voice.Read 7 Oct 2026 · open-deck.org
Deck format
A .deck file is a ZIP containing a deck.json manifest and self-contained index.html.Read 15 Oct 2026 · open-deck.org
Developer requirements
Native builds require Xcode for iOS or Android Studio plus a JDK for Android.Read 15 Oct 2026 · github.com
Export
Users can export a standalone HTML page or a `.deck` file for OpenDeck apps.Read 7 Oct 2026 · open-deck.org
Format licence
The .deck specification is dedicated to the public domain under CC0.Read 15 Oct 2026 · open-deck.org
HTML export
Authors can export a standalone HTML page that opens in a browser without OpenDeck.Read 15 Oct 2026 · open-deck.org
Interactive controls
Decks support toggles, drag-to-reorder interactions, and tap-to-reveal behavior.Read 15 Oct 2026 · open-deck.org
Interactivity
Decks can include toggles, drag-to-reorder, and tap-to-reveal interactions.Read 7 Oct 2026 · open-deck.org
Kit repository status
The authoring-kit repository is public, MIT licensed, and documents portable installation across several coding agents.Read 15 Oct 2026 · github.com
Licensing
The app is Apache-2.0, the authoring kit is MIT, and the `.deck` format is CC0 public domain.Read 7 Oct 2026 · open-deck.org
Limit: Android maturity
The repository reports Android support as a debug APK build with an on-device verification checklist still remaining.Read 15 Oct 2026 · github.com
Limit: Windows native app
The app repository says Windows is intentionally out of scope because desktop browsers already open local HTML.Read 15 Oct 2026 · github.com
Narration
Natural voice narration can be embedded directly into a deck file.Read 15 Oct 2026 · open-deck.org
Offline playback
Decks are self-contained and play without a server or network connection.Read 15 Oct 2026 · open-deck.org
Package support
The player accepts .deck and .zip presentation packages and renders them inside cross-origin iframes.Read 15 Oct 2026 · github.com
Platform availability
The homepage lists browser, Mac, iPhone and iPad, and Windows apps as available, and says Android is coming soon.Read 7 Oct 2026 · open-deck.org
Player licence
The OpenDeck player is licensed under Apache License 2.0.Read 15 Oct 2026 · open-deck.org
Plugin installation
Claude Code users install the kit through the open-deck-org/opendeck marketplace commands.Read 15 Oct 2026 · github.com
Portable files
A deck packages slides, motion, and voice into one file that can be emailed, hosted, or played offline.Read 15 Oct 2026 · open-deck.org
Presentation controls
The kit includes step navigation, fullscreen, thumbnail rail, reset, autoplay, and narration controls.Read 15 Oct 2026 · github.com
Project size signal
The GitHub organization shows two followers and three public repositories: the app, authoring kit, and format specification.Read 15 Oct 2026 · github.com
Rating on Apple App Store
No rating is displayed because the app has not received enough ratings or reviews for an overview.Read 15 Oct 2026 · apps.apple.com
Security isolation
Imported deck HTML runs in a sandboxed, isolated environment that is separated from the app shell.Read 15 Oct 2026 · open-deck.org
Spec repository status
The separate specification repository publishes the .deck schema under CC0-1.0.Read 15 Oct 2026 · github.com
Supported devices
The app runs on iPhone, iPad, and Mac, and exported HTML decks open in modern browsers on any device.Read 7 Oct 2026 · open-deck.org
Terms limitation
The software is supplied as-is and the project promises no uptime or uninterrupted availability.Read 15 Oct 2026 · open-deck.org
Voice engine
The authoring kit uses an ElevenLabs API key in the browser session and embeds only generated audio in exported files.Read 15 Oct 2026 · github.com
Web runtime requirement
The web shell must be served over HTTP because its service-worker deck path does not work from file:// pages.Read 15 Oct 2026 · github.com

Plans and prices

Free Free Free forever No paid tiers · no in-app purchases · no account required Read 15 Oct 2026 · open-deck.org

Every OpenDeck plan and price →

Strong points and limits

Strong points

  • Decks can play offline without a server
  • Exports `.deck` files and standalone HTML
  • Supports narration and interactive elements
  • Free forever with no in-app purchases
  • Privacy policy says imported decks stay on-device

Limits

  • Android is listed as coming soon
  • Native app availability is listed for specific platforms

Who it suits

OpenDeck suits people preparing presentations as self-contained files, especially those who want offline playback or interactive decks. It also fits users who want to export a standalone HTML presentation.

Verdict

OpenDeck centers on portable `.deck` presentations with offline playback, alongside HTML export and narration or interactive elements. Check the listed platform availability if you need an Android app.

Where Specifiction places it

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