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

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 Deployed Apps

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...

One of a kind set of features

Codename One makes cross platform development simple, seamless and maintainable

High DPI Support

Layout managers, multi-images, 9-piece borders and dozens of features designed to dynamically adapt your UI to all resolutions/densities.

Builtin Common Controls

Side menus, swipe containers, pull to refresh, infinite scroll and many other patterns are builtin

Full access to native

When you need to integrate with native features you can invoke Objective-C/Dalvik code thru native interfaces while maintaining portability!

Works with All IDE's!

NetBean, Eclipse & IntelliJ are fully supported

High Performance

Codename One is native to Android and generates native C code for iOS. It's as if you coded the app in C by hand.

GUI Builder/Fast Simulator

Apps can be hand coded or built with drag and drop, the Codename One device simulator is remarkably fast for short development cycles

Desktop & JavaScript targets

You can build a desktop Mac/Windows app as well as a JavaScript app that can run in the browser

Open Source

Codename One is completely open source and has a vibrant developer community.

Highly Extensible

3rd parties can build extensions (libraries/plugins) & add them right into Codename One. These extensions can include native OS code for full system access. Check out some of the available extensions here.

Get started right away!

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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

How does it Work?

How does it Work?

You know that feeling before going on stage to talk or perform. It's a knot in your stomach but also an exhilarating sense of excitement about what's to come... I've got that fidgety feeling of "can't wait to get it out" and yet I feel there is so much more to do.

Getting from Good to Great

Getting from Good to Great

Thanks for all the great feedback on my last post, I got some wonderful app suggestions from some of you and some interesting questions. Overall, there were more than 100 comments and emails so I apologize if I took too long to answer some of you. I already mentioned the focus of these coming courses is to let you create apps in a more practical form: "cook book" style.
But while I talked a bit about the narrative and the course I didn't explain exactly how or why this will work effectively.

Code Freeze for 3.7

Code Freeze for 3.7

3.7 is almost here... Later today we will enter the week long code freeze where only critical issues are fixed. We'll publish the plugin release candidate for 3.7 soon and it will include some interesting new things that I haven't discussed at all!

That's a Great Looking App

That's a Great Looking App

I talk to a lot of mobile developers or those who are starting out in the field and by far the number one problem is getting a refined sublime app. There are too many difficulties and pitfalls along the way and the end result is often "sub par" in terms of the UI you want to achieve.
We too bare responsibility for that. We focus too much on the technology and too little on making "gorgeous" easy. I want you to join me in changing that narrative...

Start now! It's free!