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Dart 2.18 is available now with Objective-C & Swift interoperability and
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Dart is a client-optimized language for fast apps on any platform
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Dart is free and open source  

Optimized
for UI
Develop with a programming language specialized around the needs of user
interface creation
Productive
development
Make changes iteratively: use hot reload to see the result instantly in your
running app
Fast on all
platforms
Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile
to JavaScript for the web
Optimized for UI
 * Mature and complete async-await for user interfaces containing event-driven
   code, paired with isolate-based concurrency
 * A programming language optimized for building user interfaces with features
   such as sound null safety, the spread operator for expanding collections, and
   collection if for customizing UI for each platform
 * A programming language that is easy to learn, with a familiar syntax


Productive Development
 * Make changes to your source code iteratively, using hot reload to instantly
   see the effect in the running app
 * Write code using a flexible type system with rich static analysis and
   powerful, configurable tooling
 * Do profiling, logging, and debugging with your code editor of choice


Fast on all platforms
 * AOT-compile apps to native machine code for instant startup
 * Target the web with complete, mature, fast compilers for JavaScript
 * Run backend code supporting your app, written using a single programming
   language

Optimized for UI
 * Mature and complete async-await for user interfaces containing event-driven
   code, paired with isolate-based concurrency
 * A programming language optimized for building user interfaces with features
   such as sound null safety, the spread operator for expanding collections, and
   collection if for customizing UI for each platform
 * A programming language that is easy to learn, with a familiar syntax


Productive development
 * Make changes to your source code iteratively, using hot reload to instantly
   see the effect in the running app
 * Write code using a flexible type system with rich static analysis and
   powerful, configurable tooling
 * Do profiling, logging, and debugging with your code editor of choice

Fast on all platforms
 * AOT-compile apps to native machine code for instant startup
 * Target the web with complete, mature, fast compilers for JavaScript
 * Run backend code supporting your app, written using a single programming
   language




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