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Gorgeous native mobile app development with Java or Kotlin for iPhone, Android etc....

Learn more in our academy... Hours of free content

BuildWrite code in Java(tm) using Eclipse, NetBeans or IntelliJ/IDEA

TestVerify your app with our simulator, devices & test automation tools

DeployGenerate native binaries for all device types using the Codename One build cloud

180M App Installs

40K Developers

1M Cloud Builds

Testimonials

Chidiebere Okwudire
Chidiebere Okwudire SMash ICT Solutions/Senior Engineer at Sioux, Netherlands

"Affordable cross-platform toolchain that works!"

Easy extension with third-party libraries, active developer support and attractive pricing...

Ram Nathaniel
Ram Nathaniel CEO & Founder of MathUnderground, Israel

"Over 2 million active installations"

[A] mature, solid & reliable platform. It allows you to concentrate [on] developing your app, not platform specific implementations...

Fabrício Cabeça
Fabrício Cabeça Senior Developer at Pmovil, Brazil

"Going from design to working app is a breeze"

Codename One greatly reduced our development time and costs, while giving us the ability to deliver a custom experience in each platform when needed.

Ali Sayed
Ali Sayed Senior Developer, Egypt

"The best cross platform app development tool"

Its native access allowed us to add functionalities without limiting developers to platform capabilities.

Fabrizio Grassi
Fabrizio Grassi Chemetall, Italy

"a true write once run anywhere solution!"

Codename One has proven to be a productive tool for us - a true write once run anywhere solution!

Rex Green
Rex Green Vision24, South Africa

"Fast & efficient"

Fast & efficient way to eliminate the hassle of targeting multiple platforms without resorting to HTML5!

Hélio Rugani
Hélio Rugani Sócio Proprietário, Brazil

"Simply a great framework!"

[We had] some non conventional requirements & Codename One gave us good answers for all the challenges that we faced during app development.

Gareth Murfin
Gareth Murfin Developer, Taiwan

"I utilize my Java knowledge to deliver native apps"

I can deliver native apps for both platforms from a single codebase in half the time, at half the cost, with no need to hire anyone.

 Lucky Oscar Masango
Lucky Oscar Masango CTO at BOi Global Group, South Africa

"I would advise to all developers to try it out today!"

[It] has given us the ability to develop apps for all mobile platforms [quickly] & at a low cost. [It's] the most innovative tool of this generation...

What's so special about Codename One?

We are the only ones that provide...
Write Once Run Anywhere, no special hardware & 100% code reuse
Compile Java(tm) or Kotlin to native iOS, Windows (UWP), Android, Desktop & JavaScript
Easy to use with 100% portable Drag & Drop GUI builder
You can control every pixel and draw anywhere
Full access to native OS using the native language (e.g. Obj-C, C# etc.)
Use native widgets & mix them with our components in the hierarchy (heavyweight/lightweight mixing)
Open Source & Free for commercial use with enterprise grade commercial offering

Get started right away!

Start Now! It's Free!

Built with Codename One

Check out the full gallery here & our demos here
Want us to build your mobile app? Learn more here

Latest Posts From Our Blog

Keeping Busy

Keeping Busy

I've been remarkably busy with the Uber clone application. Cloning Uber proved to be pretty easy but writing the material about it is much harder so I'm taking longer than I anticipated to finish everything. I'm already up to slide 200 and I've barely started... I think I might end up with more than 1,000 slides in this module!

Updates and Holidays

Updates and Holidays

Before I go into the details a quick announcement, we need to update some of our push servers. We will have a short amount of downtime on Sunday December 3rd around 8AM GMT. This update should be very fast and barely noticeable but it might impact some push message deliverability for a short period.

Clone and Run Codename One Demos In Single Line of Code

Clone and Run Codename One Demos In Single Line of Code

We have loads of demo Codename One apps hosted on Github, however cloning and running a project can be a little tricky because we generally don't publish the dependent jar files (e.g. CodenameOne.jar) in the Github repository. This helps keep the repository lean, but it adds some steps to the process of cloning and running the project.

Uber vs. Clone - Spot the difference

Uber vs. Clone - Spot the difference

I've been working on creating a clone of the Uber app for our upcoming update of the Build Real World Full Stack Mobile Apps in Java course. There is a lot to go through there but the basics are surprisingly easy.

Start now! It's free!