12 Best Cross-Platform Development Frameworks in 2026, Compared

Flutter is the safest default in this list for a team that wants one codebase and one look everywhere. Google's UI toolkit compiles Dart to native ARM code for iOS and Android, and the same code also builds web, Windows, macOS and Linux apps. Its own rendering engine draws every pixel, so the app looks identical on each platform instead of borrowing each platform's native controls.

The price is $0: the SDK, engine and DevTools are free under the BSD 3-Clause licence, with no paid edition. The real costs are the people and the store fees — Apple's $99 a year and Google Play's $25 one-time registration. Pick Flutter when a consistent, custom-designed UI matters more than matching each platform's native controls exactly.

React Native is the pragmatic pick for a JavaScript team. It is Meta's open-source framework for building iOS and Android apps with React, and it renders real native UI components rather than a web view, so the result feels like a native app. Because it runs on the JavaScript ecosystem, the team can reuse its existing skills and most of its npm libraries.

The framework is free under the MIT licence, with no paid tier from Meta. The official guidance is to start new apps with Expo, which handles the native toolchain. The catch is the native edge: some features need Swift, Kotlin or Objective-C, and upgrades can break third-party libraries. Choose React Native when hiring speed and native feel matter most.

Expo is React Native with the sharp edges filed off. The framework itself is free and open source under the MIT licence, and its optional cloud services, Expo Application Services, handle builds, store submissions and over-the-air updates. A small team can ship to both stores without owning a Mac or maintaining a local native toolchain.

The free EAS plan covers 15 Android and 15 iOS builds a month and updates for 1,000 monthly active users. Starter costs $19 a month plus usage, with $45 of build credit, and Production is $199 a month plus usage. Pick Expo when the team wants to ship fast and can live inside its managed workflow; pick bare React Native when custom native modules are essential.

.NET MAUI is the successor to Xamarin.Forms, and it is the natural choice for a team that already builds in C#. A single C# and XAML codebase compiles to native apps on Android, iOS, macOS and Windows, with one project structure and direct access to each platform's native APIs. It is part of .NET, so the team keeps its language, libraries and tooling.

The framework is free and open source under the MIT licence, with no separate mobile licence fee from Microsoft. Visual Studio Community is free for individuals and small teams, though larger organisations need a paid Visual Studio subscription. The trade-off is ecosystem size: fewer third-party controls and a smaller community than Flutter or React Native. Pick MAUI when the team already speaks C#.

Kotlin Multiplatform takes a different deal from the rest of this list: share the logic, keep the native UI. JetBrains' open-source technology lets a team write networking, storage and business rules once in Kotlin and use them on Android, iOS, desktop, web and server, while each platform's interface stays genuinely native. Google announced official support for sharing business logic between Android and iOS in May 2024.

It is free under the Apache 2.0 licence, and JetBrains' own survey found 55% of users reporting better collaboration after adopting it and 65% reporting better performance and quality. The catch is that the team still writes two UIs and still needs iOS skills. Pick it when native feel on each platform matters more than a single shared interface.

Ionic is the framework for a team that already builds for the web. Its open-source UI toolkit turns HTML, CSS and JavaScript into high-quality mobile and desktop apps, with components that adapt to iOS and Android design patterns. Paired with Capacitor, the same codebase reaches native device features and ships to the stores, and it also runs as a plain web app.

The framework itself is free and open source. The trade-off is the web view: apps render in a web view rather than native controls, so heavy animations need care, and the team should budget for performance tuning. Ionic's Appflow cloud service stopped new sales in February 2025 and ends on December 31, 2027, so new teams should plan builds and updates elsewhere. Pick Ionic when web skills are the team's strength.

Capacitor is the lightest lift in this list for a team that already has a web app. It is a free, open-source native runtime from the Ionic team that wraps a standard web codebase and runs it natively on iOS, Android and the web, with a consistent TypeScript API for device features such as the camera, file system and location.

There is no licence fee: Capacitor is MIT-licensed and free for commercial use. Because it is a runtime rather than a UI framework, the team brings its own interface — React, Vue, Angular or plain HTML — and the app's performance depends on how well that web app is built. Pick Capacitor when the web app already exists and the job is to get it into the stores.

Tauri is the answer to Electron's size. It builds desktop and mobile apps from a web frontend with a Rust backend, but instead of bundling Chromium it uses the web renderer the operating system already has — WebView2 on Windows, WKWebView on macOS. A minimal app can come in under 600KB, and memory use stays far below an Electron app.

The framework is free under MIT or Apache 2.0, with no paid tier, and version 2 is the stable line, covering Windows, macOS, Linux, iOS and Android. The catch is Rust: any real backend work needs a Rust-capable developer, and the ecosystem is smaller than Electron's. Pick Tauri when a small, fast desktop download matters more than the biggest plugin library.

Electron is the veteran of desktop cross-platform development. It combines Chromium, Node.js and native code so a team can build Windows, macOS and Linux apps with the web technologies it already knows. It is maintained by the OpenJS Foundation with backing from Microsoft, Slack and Notion, and it releases a new major version in step with Chromium.

Electron is free and open source under the MIT licence, with no licence fee for commercial or personal use. The price is size and memory: every app bundles Chromium, so a simple app ships at 100MB or more and uses far more RAM than a Tauri app. Pick Electron when the team wants the biggest ecosystem and the most proven path, and can accept the download size.

Qt is the old hand in this list: a C++ framework for building desktop, mobile and embedded apps from one codebase, with native performance and a mature set of widgets and QML tools. It has shipped in cars, medical devices and industrial systems for decades, and its module library covers everything from 3D graphics to Bluetooth.

Qt is free under the LGPL or GPL for open-source projects; a commercial licence is needed for proprietary apps that cannot meet the LGPL terms, and commercial pricing is quote-based with no published list price. The team should check the licence before shipping a closed app. Pick Qt when native performance and embedded targets matter more than a low licence cost.

Avalonia is the .NET framework for teams that care about Linux. It is a free, open-source UI framework in C# and XAML that ships one codebase to Windows, macOS, Linux, iOS, Android and the browser, drawing its own interface so the app looks the same everywhere. It is used in production by teams at Autodesk and JetBrains, and it is commercially backed by the engineers who build it.

The framework is MIT-licensed and free for commercial work, with no seat fees or per-device royalties. Optional Plus tooling starts at €299 a year per seat, and Pro at €899. The trade-off is ecosystem size: fewer third-party controls than .NET MAUI and a smaller community. Pick Avalonia when Linux is a first-class target, not an afterthought.

Uno Platform is the choice for a team that already builds with Microsoft's XAML stack. Its free, open-source framework lets one C# and XAML codebase target Windows, macOS, Linux, iOS, Android and WebAssembly, built on WinUI so Windows apps use Microsoft's current native UI. The same code can also become a web app through WebAssembly.

The platform itself is free under Apache 2.0, and its Studio tooling has a free Community tier. Paid Studio plans add AI credits and design control, with Pro reported at $39.99 a month per developer by third-party directories — check the vendor's own page before budgeting. The trade-off is community size: smaller than Flutter or .NET MAUI. Pick Uno when the team already lives in WinUI and XAML.