Will your app fit?
Check the libraries and APIs in the standalone SDK release. React is the current framework adapter.
Attar Electron is planned and is not included in this release. Read the roadmap ↗
Standalone UI applications on macOS. A status covers the scope in its row, not every API in a library.
What the states mean
- Supported
- Available within the named scope.
- Limited
- A usable subset exists; the row names what remains outside it.
- Unavailable
- The operation is absent or explicitly refused.
- Not verified
- The available evidence is insufficient to offer a support answer for this target.
Engine tests and older application runs are identified separately in the evidence. An unverified result is not a claim that the implementation is absent.
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React & JavaScript
React 19 & hooksBuild components with state, effects and refs. Standalone apps use the pinned React 19.3.0 pair.Supported
Limits. Hydration is not implemented. Full class-component, concurrent rendering and Suspense compatibility is not established. Support for more UI frameworks is planned; React is the current adapter.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Panels and Notes use real React components. Recorded package checks cover initial rendering and selected state, style, order and focus updates.
JavaScript, TypeScript & TSXCompile a fixed application graph ahead of time. Ordinary functions, classes, modules and async code are inputs.Limited
Limits. Every executable import must resolve at build time. Some language cases remain incomplete; see the JavaScript test report.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. The compiler has recorded application runs and a separate Test262 report. Test262 results describe the engine, not every application or this release.
Read the JavaScript test results
npm dependenciesBundle dependencies whose JavaScript and API calls fit the supported application surface.Limited
Limits. Arbitrary npm compatibility is not promised. Native addons, runtime code downloads and browser-only services need separate support.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Pinned React, Radix and utility packages are used by the examples. Package presence or a successful import is not proof that every runtime path works.
eval & runtime executable loadingeval, new Function and runtime loading of executable code are outside the AOT model.Unavailable
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. The language contract requires a build diagnostic for these inputs.
CSS & layout
CSS files & importsImport ordinary CSS with import './style.css'. Local @import rules, images and fonts become build inputs.Supported
Limits. Dynamic CSS imports, remote stylesheet imports and .module.css files are refused.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Static CSS imports are implemented by the bundler and used by both standalone examples. The packaged Panels checks include compiled Tailwind CSS.
HTML, flexbox & gridBlink owns HTML layout, the CSS cascade, flexbox, grid and media queries.Limited
Limits. Use admitted element and CSS features. A broad Blink implementation is not a promise of browser-wide API support.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Historical app checks exercise block and flex layouts. Separate engine checks exercise grid; neither establishes all layout cases in this release.
React style valuesUpdate element styles from React objects, including the panel width and progress transform in Panels.Supported
Limits. This is element styling, not unrestricted runtime stylesheet generation.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. The React host maps style objects to Blink declarations. Recorded package checks cover style updates and removal.
Transitions & CSS animationsUse Blink transitions and keyframe animations, including the enter and exit animations used by UI components.Limited
Limits. Do not infer complete animation behavior from a mount or an engine-only pass.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Native transition checks and separate CSS engine tests cover selected cases. Animation events include the fields used by Radix Presence.
Images, fonts & bundled assetsImport local images and fonts, or declare packaged resource directories. Static CSS can reference local assets.Limited
Limits. Format and remote-resource behavior depend on the selected native provider. Remote stylesheet imports are refused.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Notes imports SVG scenes. Historical packaged app checks cover bundled fonts and images.
SVGInline SVG and SVG images use Blink. The examples import SVG assets and the gallery uses SVG icons.Limited
Limits. Those recorded cases do not establish every SVG feature in this release.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. An earlier SVG corpus recorded 39 matching cases; historical Etcher checks exercise valid and malformed logos.
UI libraries
Tailwind CSS 4Compile Tailwind to a CSS file, then import that file into the application.Supported
Limits. Regenerate the stylesheet when utility classes change. Support follows the CSS emitted by the selected Tailwind version.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Panels pins Tailwind 4.3.3 and checks in the generated CSS. Tailwind and Node are build tools, not application runtime dependencies.
shadcn/uiUse the pinned Radix / New York v4 components. The packaged macOS gallery passes scenarios for 61 component names.Limited
Limits. The composed data-table and date-picker recipes, other variants, exhaustive visual states, package upgrades and physical input paths are not verified.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. One packaged Apple silicon artifact passed all 61 recorded component scenarios with no failures, crashes or timeouts.
Components with passing packaged scenarios
New York v4 / Radix on macOS Apple silicon. Each listed name passed its recorded scenario. Other variants, exhaustive states and physical input paths remain unverified.
- accordion
- alert
- alert-dialog
- aspect-ratio
- attachment
- avatar
- badge
- breadcrumb
- bubble
- button
- button-group
- calendar
- card
- carousel
- chart
- checkbox
- collapsible
- combobox
- command
- context-menu
- dialog
- direction
- drawer
- dropdown-menu
- empty
- field
- form
- hover-card
- input
- input-group
- input-otp
- item
- kbd
- label
- marker
- menubar
- message
- message-scroller
- native-select
- navigation-menu
- pagination
- popover
- progress
- radio-group
- resizable
- scroll-area
- select
- separator
- sheet
- sidebar
- skeleton
- slider
- sonner
- spinner
- switch
- table
- tabs
- textarea
- toggle
- toggle-group
- tooltip
Web APIs
Forms, inputs & focusUse controlled fields, input events and element focus. Notes provides an add/delete form; Panels updates input and textarea values.Limited
Limits. Native form navigation is not supported. A working text update does not establish all keyboard or IME paths.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Older packages have scoped control and focus checks. Physical input, IME and complete focus behavior need checks on the release package.
DOM creation & selectorsCreate admitted elements and text nodes, query the tree, update classes and data attributes, and traverse nodes.Limited
Limits. This is a defined DOM surface, not all browser DOM APIs.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. These wrappers use Blink providers. Native regression cases and earlier packaged fixtures cover selected operations and retained node identity.
Layout measurements & computed styleRead live computed style and element bounds. Components use these values for sizing and placement.Limited
Limits. Overlay placement and viewport-edge behavior need component-level checks.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Native checks exercise geometry, selectors and computed styles. The native host exposes offset coordinates used by Select.
Resize, mutation & intersection observersObserve changes through Blink-backed ResizeObserver, MutationObserver and IntersectionObserver bindings.Limited
Limits. Full option coverage and every component lifecycle are not verified on the release package.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Native regression definitions and scoped runs cover observer delivery and lifetime. Callback and teardown fixes preserve native observer lifetime.
Events & pointer captureRegister DOM listeners, cancel events and use pointer capture through the native host.Limited
Limits. A scenario definition is not a passing result. Physical pointer and keyboard behavior remain separate package checks.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Native tests cover listener lifetime, cancellation and shared subscriptions. The gallery includes native scenario definitions for control interactions.
Timers & animation framesUse setTimeout, setInterval and requestAnimationFrame, with cancellation on cleanup.Limited
Limits. An initial-tree check does not execute all timed application behavior.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. The examples use timers and frames. Native runtime checks cover scheduling, cancellation and teardown.
Media queries & matchMediaUse CSS media queries and a live MediaQueryList from matchMedia.Limited
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Native media-query checks cover matching and event delivery. Application resize behavior needs its own checks.
Element scrollingRead element scroll metrics and use the admitted scrollIntoView operation.Limited
Limits. The current wrapper admits boolean scrollIntoView alignment; window scrolling is outside this surface.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Native tests cover scroll geometry. The component gallery defines a ScrollArea scenario.
AccessibilityBlink supplies accessible roles, names and states through the native accessibility boundary.Limited
Limits. No blanket WCAG or assistive-technology conformance claim.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. A historical Etcher package exposed 65 accessibility nodes and actionable buttons. That result does not verify the new component gallery.
Canvas & mediaCanvas 2D JavaScript bindings, audio/video elements and MathML are not offered in this UI release scope.Unavailable
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. The inspected surface does not establish these features as usable application APIs.
Desktop APIs
Browser networkingStandalone browser networking is not offered by this release’s UI host.Unavailable
Limits. A native integration needs an explicitly bound provider; a browser API name does not supply one.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. The published skill and UI host boundary exclude fetch, XMLHttpRequest and WebSocket. Electron network providers belong to the planned compatibility layer.
Browser storage APIsThe standalone UI host does not expose browser localStorage, sessionStorage or IndexedDB.Unavailable
Limits. Node fs and Electron secret storage are not part of this release.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. The published skill excludes these browser storage APIs. Host filesystem access is a separate native integration.
Browser Clipboard APIThe standalone UI host does not expose browser clipboard APIs.Unavailable
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. The published skill excludes clipboard APIs. Existing Electron clipboard work belongs to a planned product, not this release.
Standalone application windowStandalone UI projects use the native window owner. The current small-app workflow opens one window at the default size.Limited
Limits. Configurable standalone window size, multiple windows and Electron menus or dialogs are not promised by this release.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. The published skill describes the standalone window boundary. Historical Etcher window and dialog results belong to Electron R&D.
Platforms & distribution
macOS app packagingBuild a standalone Apple silicon .app with compiled application code and Blink.Limited
Limits. An ad-hoc signature does not establish Developer ID signing or notarization. The macOS compiler package requires macOS 15 or newer.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Notes and Panels have recorded build, signature and scoped startup results. Ad-hoc signing is separate from Developer ID distribution and notarization.
LinuxLinux x86_64 compiler packages are available. The React / shadcn standalone application path is not verified on Linux.Not verified
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. Linux package checks do not establish the same UI component coverage as the macOS examples.
Windows platformWindows packages are not available.Unavailable
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. The current toolchain has no supported Windows target.
Rust, C & native embeddingA C ABI connects native clients to Attar. Rust and C host adapters require a matching client-form SDK package.Not verified
Limits. The ordinary standalone package is not proof that a compatible client SDK is available. Swift, Kotlin, Go and Zig host adapters are planned. The ABI is not frozen.
On Linux, this feature is not verified for the standalone UI path. The recorded macOS checks below do not establish Linux support.
Recorded evidence. The source defines C handles and Rust ownership wrappers. An earlier macOS client archive has recorded native link and window evidence; the complete current release workflow is not reverified.
Need a specific API?
The technical inventory keeps individual Electron, Node and Blink records with their original assessment dates. It is separate from this release guide.
Search the full API inventory ↗ · Compatibility data (JSON)